83981960 has 16 divisors (see below), whose sum is σ = 188959500. Its totient is φ = 33592768.

The previous prime is 83981951. The next prime is 83981983. The reversal of 83981960 is 6918938.

It can be written as a sum of positive squares in 2 ways, for example, as 73856836 + 10125124 = 8594^2 + 3182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049735 + ... + 1049814.

Almost surely, 2^83981960 is an apocalyptic number.

It is an amenable number.

83981960 is an abundant number, since it is smaller than the sum of its proper divisors (104977540).

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

83981960 is a wasteful number, since it uses less digits than its factorization.

83981960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099560 (or 2099556 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 83981960 is about 9164.1671743809. The cubic root of 83981960 is about 437.9205599484.

The spelling of 83981960 in words is "eighty-three million, nine hundred eighty-one thousand, nine hundred sixty".