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39707444868 = 223713137265417
BaseRepresentation
bin100100111110101111…
…111000011010000100
310210111021120012022020
4210332233320122010
51122310101213433
630124044203140
72603662466250
oct447657703204
9123437505266
1039707444868
11159268aa043
127841b394b0
13398a590310
141cc97b5260
151075e98cb3
hex93ebf8684

39707444868 has 96 divisors (see below), whose sum is σ = 114864417024. Its totient is φ = 10395813888.

The previous prime is 39707444863. The next prime is 39707444911. The reversal of 39707444868 is 86844470793.

It is not an unprimeable number, because it can be changed into a prime (39707444863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16896 + ... + 282312.

It is an arithmetic number, because the mean of its divisors is an integer number (1196504344).

Almost surely, 239707444868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39707444868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57432208512).

39707444868 is an abundant number, since it is smaller than the sum of its proper divisors (75156972156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39707444868 is a wasteful number, since it uses less digits than its factorization.

39707444868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265581 (or 265579 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 39707444868 in words is "thirty-nine billion, seven hundred seven million, four hundred forty-four thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 39 42 52 78 84 91 137 156 182 273 274 364 411 546 548 822 959 1092 1644 1781 1918 2877 3562 3836 5343 5754 7124 10686 11508 12467 21372 24934 37401 49868 74802 149604 265417 530834 796251 1061668 1592502 1857919 3185004 3450421 3715838 5573757 6900842 7431676 10351263 11147514 13801684 20702526 22295028 24152947 36362129 41405052 48305894 72458841 72724258 96611788 109086387 144917682 145448516 218172774 254534903 289835364 436345548 472707677 509069806 763604709 945415354 1018139612 1418123031 1527209418 1890830708 2836246062 3054418836 3308953739 5672492124 6617907478 9926861217 13235814956 19853722434 39707444868