99144870 has 32 divisors (see below), whose sum is σ = 259580160. Its totient is φ = 24035040.

The previous prime is 99144827. The next prime is 99144883. The reversal of 99144870 is 7844199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149890 + ... + 150549.

It is an arithmetic number, because the mean of its divisors is an integer number (8111880).

Almost surely, 2^99144870 is an apocalyptic number.

99144870 is an abundant number, since it is smaller than the sum of its proper divisors (160435290).

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

99144870 is a wasteful number, since it uses less digits than its factorization.

99144870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300460.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 99144870 is about 9957.1517011643. The cubic root of 99144870 is about 462.8320401120.

The spelling of 99144870 in words is "ninety-nine million, one hundred forty-four thousand, eight hundred seventy".