7971992 has 16 divisors (see below), whose sum is σ = 17082960. Its totient is φ = 3416544.

The previous prime is 7971973. The next prime is 7972009. The reversal of 7971992 is 2991797.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71123 + ... + 71234.

It is an arithmetic number, because the mean of its divisors is an integer number (1067685).

Almost surely, 2^7971992 is an apocalyptic number.

It is an amenable number.

7971992 is an abundant number, since it is smaller than the sum of its proper divisors (9110968).

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

7971992 is a wasteful number, since it uses less digits than its factorization.

7971992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142370 (or 142366 counting only the distinct ones).

The product of its digits is 71442, while the sum is 44.

The square root of 7971992 is about 2823.4716219576. The cubic root of 7971992 is about 199.7663270912.

The spelling of 7971992 in words is "seven million, nine hundred seventy-one thousand, nine hundred ninety-two".