7927988 has 6 divisors (see below), whose sum is σ = 13873986. Its totient is φ = 3963992.

The previous prime is 7927979. The next prime is 7927999. The reversal of 7927988 is 8897297.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6360484 + 1567504 = 2522^2 + 1252^2 .

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 as a sum of consecutive naturals, namely, 990995 + ... + 991002.

It is an arithmetic number, because the mean of its divisors is an integer number (2312331).

Almost surely, 2^7927988 is an apocalyptic number.

It is an amenable number.

7927988 is a deficient number, since it is larger than the sum of its proper divisors (5945998).

7927988 is a wasteful number, since it uses less digits than its factorization.

7927988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982001 (or 1981999 counting only the distinct ones).

The product of its digits is 508032, while the sum is 50.

The square root of 7927988 is about 2815.6683043285. The cubic root of 7927988 is about 199.3980903411.

The spelling of 7927988 in words is "seven million, nine hundred twenty-seven thousand, nine hundred eighty-eight".