8971988 has 12 divisors (see below), whose sum is σ = 16624692. Its totient is φ = 4222080.

The previous prime is 8971979. The next prime is 8972023. The reversal of 8971988 is 8891798.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4963984 + 4008004 = 2228^2 + 2002^2 .

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, 65903 + ... + 66038.

It is an arithmetic number, because the mean of its divisors is an integer number (1385391).

Almost surely, 2^8971988 is an apocalyptic number.

It is an amenable number.

8971988 is a deficient number, since it is larger than the sum of its proper divisors (7652704).

8971988 is a wasteful number, since it uses less digits than its factorization.

8971988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131962 (or 131960 counting only the distinct ones).

The product of its digits is 290304, while the sum is 50.

The square root of 8971988 is about 2995.3276949276. The cubic root of 8971988 is about 207.7923531791.

The spelling of 8971988 in words is "eight million, nine hundred seventy-one thousand, nine hundred eighty-eight".