7904942591 has 24 divisors (see below), whose sum is σ = 10485432720. Its totient is φ = 5886542592.

The previous prime is 7904942567. The next prime is 7904942627. The reversal of 7904942591 is 1952494097.

It is not a de Polignac number, because 7904942591 - 2¹⁰ = 7904941567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904942561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354161 + ... + 375818.

It is an arithmetic number, because the mean of its divisors is an integer number (436893030).

Almost surely, 2^7904942591 is an apocalyptic number.

7904942591 is a deficient number, since it is larger than the sum of its proper divisors (2580490129).

7904942591 is a wasteful number, since it uses less digits than its factorization.

7904942591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730023 (or 730016 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 7904942591 is about 88909.7440722894. The cubic root of 7904942591 is about 1992.0469657931.

The spelling of 7904942591 in words is "seven billion, nine hundred four million, nine hundred forty-two thousand, five hundred ninety-one".