74715939 has 28 divisors (see below), whose sum is σ = 113138616. Its totient is φ = 49315392.

The previous prime is 74715881. The next prime is 74715973. The reversal of 74715939 is 93951747.

It is a de Polignac number, because none of the positive numbers 2^k-74715939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74715894 and 74715903.

It is not an unprimeable number, because it can be changed into a prime (74715989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 81924 + ... + 82830.

Almost surely, 2^74715939 is an apocalyptic number.

74715939 is a deficient number, since it is larger than the sum of its proper divisors (38422677).

74715939 is an equidigital number, since it uses as much as digits as its factorization.

74715939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1023 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 74715939 is about 8643.8382099621. The cubic root of 74715939 is about 421.1832450052.

The spelling of 74715939 in words is "seventy-four million, seven hundred fifteen thousand, nine hundred thirty-nine".