83969980 has 24 divisors (see below), whose sum is σ = 179328240. Its totient is φ = 33018240.

The previous prime is 83969971. The next prime is 83970017. The reversal of 83969980 is 8996938.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34401 + ... + 36760.

It is an arithmetic number, because the mean of its divisors is an integer number (7472010).

Almost surely, 2^83969980 is an apocalyptic number.

It is an amenable number.

83969980 is an abundant number, since it is smaller than the sum of its proper divisors (95358260).

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

83969980 is a wasteful number, since it uses less digits than its factorization.

83969980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71229 (or 71227 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 83969980 is about 9163.5135182964. The cubic root of 83969980 is about 437.8997358818.

The spelling of 83969980 in words is "eighty-three million, nine hundred sixty-nine thousand, nine hundred eighty".