8133988 has 6 divisors (see below), whose sum is σ = 14234486. Its totient is φ = 4066992.

The previous prime is 8133971. The next prime is 8133989. The reversal of 8133988 is 8893318.

It can be written as a sum of positive squares in only one way, i.e., 7795264 + 338724 = 2792^2 + 582^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8133988.

It is not an unprimeable number, because it can be changed into a prime (8133989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1016745 + ... + 1016752.

Almost surely, 2^8133988 is an apocalyptic number.

It is an amenable number.

8133988 is a deficient number, since it is larger than the sum of its proper divisors (6100498).

8133988 is a wasteful number, since it uses less digits than its factorization.

8133988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033501 (or 2033499 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 8133988 is about 2852.0147264697. The cubic root of 8133988 is about 201.1103904233.

The spelling of 8133988 in words is "eight million, one hundred thirty-three thousand, nine hundred eighty-eight".