7990690994 has 32 divisors (see below), whose sum is σ = 14381127936. Its totient is φ = 3281397120.

The previous prime is 7990690979. The next prime is 7990691003. The reversal of 7990690994 is 4990960997.

It is a super-2 number, since 2×7990690994² (a number of 21 digits) contains 22 as substring.

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, 283787 + ... + 310670.

It is an arithmetic number, because the mean of its divisors is an integer number (449410248).

Almost surely, 2^7990690994 is an apocalyptic number.

7990690994 is a deficient number, since it is larger than the sum of its proper divisors (6390436942).

7990690994 is a wasteful number, since it uses less digits than its factorization.

7990690994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594530.

The product of its (nonzero) digits is 9920232, while the sum is 62.

The square root of 7990690994 is about 89390.6650271716. The cubic root of 7990690994 is about 1999.2239484109.

The spelling of 7990690994 in words is "seven billion, nine hundred ninety million, six hundred ninety thousand, nine hundred ninety-four".