99865044 has 36 divisors (see below), whose sum is σ = 252752500. Its totient is φ = 33246720.

The previous prime is 99865039. The next prime is 99865061. The reversal of 99865044 is 44056899.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54464400 + 45400644 = 7380^2 + 6738^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43854 + ... + 46074.

Almost surely, 2^99865044 is an apocalyptic number.

It is an amenable number.

99865044 is an abundant number, since it is smaller than the sum of its proper divisors (152887456).

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

99865044 is a wasteful number, since it uses less digits than its factorization.

99865044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3475 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 99865044 is about 9993.2499218222. The cubic root of 99865044 is about 463.9499859390.

The spelling of 99865044 in words is "ninety-nine million, eight hundred sixty-five thousand, forty-four".