84879992 has 16 divisors (see below), whose sum is σ = 167526600. Its totient is φ = 40206240.

The previous prime is 84879989. The next prime is 84880001. The reversal of 84879992 is 29997848.

It is a happy number.

It is a super-2 number, since 2×84879992² = 14409226083840128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279059 + ... + 279362.

Almost surely, 2^84879992 is an apocalyptic number.

It is an amenable number.

84879992 is a deficient number, since it is larger than the sum of its proper divisors (82646608).

84879992 is a wasteful number, since it uses less digits than its factorization.

84879992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558446 (or 558442 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 56.

The square root of 84879992 is about 9213.0338108573. The cubic root of 84879992 is about 439.4759463315.

The spelling of 84879992 in words is "eighty-four million, eight hundred seventy-nine thousand, nine hundred ninety-two".