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8939519719 = 136531053071
BaseRepresentation
bin10000101001101011…
…00011111011100111
3212002000021122122221
420110311203323213
5121302004112334
64035020533211
7434346443464
oct102465437347
925060248587
108939519719
113878142529
1218959b1207
13ac6095850
1460b39066b
15374c318b4
hex214d63ee7

8939519719 has 8 divisors (see below), whose sum is σ = 9641927232. Its totient is φ = 8239219680.

The previous prime is 8939519711. The next prime is 8939519767. The reversal of 8939519719 is 9179159398.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8939519719 - 23 = 8939519711 is a prime.

It is a super-2 number, since 2×89395197192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8939519711) 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 7 ways as a sum of consecutive naturals, for example, 518047 + ... + 535024.

It is an arithmetic number, because the mean of its divisors is an integer number (1205240904).

Almost surely, 28939519719 is an apocalyptic number.

8939519719 is a deficient number, since it is larger than the sum of its proper divisors (702407513).

8939519719 is a wasteful number, since it uses less digits than its factorization.

8939519719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053737.

The product of its digits is 5511240, while the sum is 61.

The square root of 8939519719 is about 94549.0334112412. The cubic root of 8939519719 is about 2075.4139373735.

The spelling of 8939519719 in words is "eight billion, nine hundred thirty-nine million, five hundred nineteen thousand, seven hundred nineteen".

Divisors: 1 13 653 8489 1053071 13689923 687655363 8939519719