83899900 has 72 divisors (see below), whose sum is σ = 215298720. Its totient is φ = 27767040.

The previous prime is 83899889. The next prime is 83899939. The reversal of 83899900 is 999838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18234 + ... + 22366.

It is an arithmetic number, because the mean of its divisors is an integer number (2990260).

Almost surely, 2^83899900 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 83899900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107649360).

83899900 is an abundant number, since it is smaller than the sum of its proper divisors (131398820).

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

83899900 is a wasteful number, since it uses less digits than its factorization.

83899900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 83899900 is about 9159.6888593445. The cubic root of 83899900 is about 437.7778806080. Note that the first 3 decimals are identical.

The spelling of 83899900 in words is "eighty-three million, eight hundred ninety-nine thousand, nine hundred".