83931960 has 128 divisors (see below), whose sum is σ = 290004480. Its totient is φ = 19035648.

The previous prime is 83931943. The next prime is 83931983. The reversal of 83931960 is 6913938.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136614 + ... + 137226.

It is an arithmetic number, because the mean of its divisors is an integer number (2265660).

Almost surely, 2^83931960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83931960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145002240).

83931960 is an abundant number, since it is smaller than the sum of its proper divisors (206072520).

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

83931960 is a wasteful number, since it uses less digits than its factorization.

83931960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 83931960 is about 9161.4387516372. The cubic root of 83931960 is about 437.8336350309.

The spelling of 83931960 in words is "eighty-three million, nine hundred thirty-one thousand, nine hundred sixty".