99604440 has 96 divisors (see below), whose sum is σ = 348631920. Its totient is φ = 24516864.

The previous prime is 99604433. The next prime is 99604447. The reversal of 99604440 is 4440699.

99604440 is a `hidden beast` number, since 9 + 9 + 604 + 4 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (99604433) and next prime (99604447).

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

It is a junction number, because it is equal to n+sod(n) for n = 99604395 and 99604404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99604447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5962 + ... + 15321.

Almost surely, 2^99604440 is an apocalyptic number.

99604440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99604440 is an abundant number, since it is smaller than the sum of its proper divisors (249027480).

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

99604440 is a wasteful number, since it uses less digits than its factorization.

99604440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21313 (or 21306 counting only the distinct ones).

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

The square root of 99604440 is about 9980.2024027572. The cubic root of 99604440 is about 463.5460656694.

It can be divided in two parts, 9960 and 4440, that added together give a square (14400 = 120²).

The spelling of 99604440 in words is "ninety-nine million, six hundred four thousand, four hundred forty".