99859944 has 32 divisors (see below), whose sum is σ = 250143840. Its totient is φ = 33220800.

The previous prime is 99859939. The next prime is 99859961. The reversal of 99859944 is 44995899.

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, 9139 + ... + 16829.

It is an arithmetic number, because the mean of its divisors is an integer number (7816995).

Almost surely, 2^99859944 is an apocalyptic number.

It is an amenable number.

99859944 is an abundant number, since it is smaller than the sum of its proper divisors (150283896).

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

99859944 is a wasteful number, since it uses less digits than its factorization.

99859944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8241 (or 8237 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 57.

The square root of 99859944 is about 9992.9947463210. The cubic root of 99859944 is about 463.9420879962.

The spelling of 99859944 in words is "ninety-nine million, eight hundred fifty-nine thousand, nine hundred forty-four".