7904431 has 4 divisors (see below), whose sum is σ = 8097264. Its totient is φ = 7711600.

The previous prime is 7904423. The next prime is 7904453. The reversal of 7904431 is 1344097.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344097 = 23 ⋅58439.

It is a cyclic number.

It is not a de Polignac number, because 7904431 - 2³ = 7904423 is a prime.

It is a super-2 number, since 2×7904431² = 124960058867522, 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 7904431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96355 + ... + 96436.

It is an arithmetic number, because the mean of its divisors is an integer number (2024316).

Almost surely, 2^7904431 is an apocalyptic number.

7904431 is a deficient number, since it is larger than the sum of its proper divisors (192833).

7904431 is a wasteful number, since it uses less digits than its factorization.

7904431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192832.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 7904431 is about 2811.4819935401. The cubic root of 7904431 is about 199.2003991191.

The spelling of 7904431 in words is "seven million, nine hundred four thousand, four hundred thirty-one".