7963990 has 32 divisors (see below), whose sum is σ = 15396480. Its totient is φ = 2955264.

The previous prime is 7963981. The next prime is 7964023. The reversal of 7963990 is 993697.

It is a congruent number.

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, 13134 + ... + 13726.

It is an arithmetic number, because the mean of its divisors is an integer number (481140).

Almost surely, 2^7963990 is an apocalyptic number.

7963990 is a deficient number, since it is larger than the sum of its proper divisors (7432490).

7963990 is a wasteful number, since it uses less digits than its factorization.

7963990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 7963990 is about 2822.0542163467. The cubic root of 7963990 is about 199.6994652873.

The spelling of 7963990 in words is "seven million, nine hundred sixty-three thousand, nine hundred ninety".