7904990 has 16 divisors (see below), whose sum is σ = 14463360. Its totient is φ = 3109920.

The previous prime is 7904987. The next prime is 7904993. The reversal of 7904990 is 994097.

It is an interprime number because it is at equal distance from previous prime (7904987) and next prime (7904993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5870 + ... + 7089.

It is an arithmetic number, because the mean of its divisors is an integer number (903960).

Almost surely, 2^7904990 is an apocalyptic number.

7904990 is a deficient number, since it is larger than the sum of its proper divisors (6558370).

7904990 is a wasteful number, since it uses less digits than its factorization.

7904990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 7904990 is about 2811.5814055439. The cubic root of 7904990 is about 199.2050948144.

The spelling of 7904990 in words is "seven million, nine hundred four thousand, nine hundred ninety".