83331988 has 6 divisors (see below), whose sum is σ = 145830986. Its totient is φ = 41665992.

The previous prime is 83331973. The next prime is 83332003. The reversal of 83331988 is 88913338.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (83331973) and next prime (83332003).

It can be written as a sum of positive squares in only one way, i.e., 83210884 + 121104 = 9122^2 + 348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416495 + ... + 10416502.

Almost surely, 2^83331988 is an apocalyptic number.

It is an amenable number.

83331988 is a deficient number, since it is larger than the sum of its proper divisors (62498998).

83331988 is a wasteful number, since it uses less digits than its factorization.

83331988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20833001 (or 20832999 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 83331988 is about 9128.6356045140. The cubic root of 83331988 is about 436.7878818417.

The spelling of 83331988 in words is "eighty-three million, three hundred thirty-one thousand, nine hundred eighty-eight".