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99880037 = 531884529
BaseRepresentation
bin1011111010000…
…00110001100101
320221221102122122
411331000301211
5201032130122
613524435325
72321652305
oct575006145
9227842578
1099880037
115141a394
1229548b45
131790101a
14d39d605
158b7e142
hex5f40c65

99880037 has 4 divisors (see below), whose sum is σ = 101764620. Its totient is φ = 97995456.

The previous prime is 99880021. The next prime is 99880051. The reversal of 99880037 is 73008899.

It is a Cunningham number, because it is equal to 99942+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72012196 + 27867841 = 8486^2 + 5279^2 .

It is a cyclic number.

It is not a de Polignac number, because 99880037 - 24 = 99880021 is a prime.

It is a super-2 number, since 2×998800372 = 19952043582242738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99880037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99880087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942212 + ... + 942317.

It is an arithmetic number, because the mean of its divisors is an integer number (25441155).

Almost surely, 299880037 is an apocalyptic number.

It is an amenable number.

99880037 is a deficient number, since it is larger than the sum of its proper divisors (1884583).

99880037 is a wasteful number, since it uses less digits than its factorization.

99880037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884582.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 99880037 is about 9994.0000500300. Note that the first 4 decimals coincide. The cubic root of 99880037 is about 463.9732027851.

The spelling of 99880037 in words is "ninety-nine million, eight hundred eighty thousand, thirty-seven".

Divisors: 1 53 1884529 99880037