75139404 has 48 divisors (see below), whose sum is σ = 180483072. Its totient is φ = 24316992.

The previous prime is 75139399. The next prime is 75139451. The reversal of 75139404 is 40493157.

It is a super-3 number, since 3×75139404³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114742 + ... + 115394.

It is an arithmetic number, because the mean of its divisors is an integer number (3760064).

Almost surely, 2^75139404 is an apocalyptic number.

It is an amenable number.

75139404 is an abundant number, since it is smaller than the sum of its proper divisors (105343668).

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

75139404 is a wasteful number, since it uses less digits than its factorization.

75139404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 75139404 is about 8668.2987950347. The cubic root of 75139404 is about 421.9774551271.

The spelling of 75139404 in words is "seventy-five million, one hundred thirty-nine thousand, four hundred four".