99440604 has 36 divisors (see below), whose sum is σ = 264595240. Its totient is φ = 31402080.

The previous prime is 99440603. The next prime is 99440609. The reversal of 99440604 is 40604499.

99440604 is a `hidden beast` number, since 9 + 9 + 4 + 40 + 604 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99440603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72007 + ... + 73374.

Almost surely, 2^99440604 is an apocalyptic number.

It is an amenable number.

99440604 is an abundant number, since it is smaller than the sum of its proper divisors (165154636).

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

99440604 is a wasteful number, since it uses less digits than its factorization.

99440604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145410 (or 145405 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 99440604 is about 9971.9909747252. The cubic root of 99440604 is about 463.2917690691.

The spelling of 99440604 in words is "ninety-nine million, four hundred forty thousand, six hundred four".