7985904 has 40 divisors (see below), whose sum is σ = 21345360. Its totient is φ = 2569728.

The previous prime is 7985897. The next prime is 7985927. The reversal of 7985904 is 4095897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1477 + ... + 4260.

It is an arithmetic number, because the mean of its divisors is an integer number (533634).

Almost surely, 2^7985904 is an apocalyptic number.

It is an amenable number.

7985904 is an abundant number, since it is smaller than the sum of its proper divisors (13359456).

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

7985904 is a wasteful number, since it uses less digits than its factorization.

7985904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777 (or 5771 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 7985904 is about 2825.9341818238. The cubic root of 7985904 is about 199.8824642736.

The spelling of 7985904 in words is "seven million, nine hundred eighty-five thousand, nine hundred four".