74913931 has 4 divisors (see below), whose sum is σ = 77497200. Its totient is φ = 72330664.

The previous prime is 74913913. The next prime is 74913959. The reversal of 74913931 is 13931947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13931947 = 149 ⋅93503.

It is a cyclic number.

It is not a de Polignac number, because 74913931 - 2⁵ = 74913899 is a prime.

It is a super-2 number, since 2×74913931² = 11224194115745522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74913901) 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, 1291591 + ... + 1291648.

It is an arithmetic number, because the mean of its divisors is an integer number (19374300).

Almost surely, 2^74913931 is an apocalyptic number.

74913931 is a deficient number, since it is larger than the sum of its proper divisors (2583269).

74913931 is a wasteful number, since it uses less digits than its factorization.

74913931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583268.

The product of its digits is 20412, while the sum is 37.

The square root of 74913931 is about 8655.2834153481. The cubic root of 74913931 is about 421.5549522223.

The spelling of 74913931 in words is "seventy-four million, nine hundred thirteen thousand, nine hundred thirty-one".