99509604 has 24 divisors (see below), whose sum is σ = 233731008. Its totient is φ = 32949600.

The previous prime is 99509603. The next prime is 99509617. The reversal of 99509604 is 40690599.

It is a happy number.

It is a super-2 number, since 2×99509604² = 19804322576473632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99509603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25647 + ... + 29270.

It is an arithmetic number, because the mean of its divisors is an integer number (9738792).

Almost surely, 2^99509604 is an apocalyptic number.

It is an amenable number.

99509604 is an abundant number, since it is smaller than the sum of its proper divisors (134221404).

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

99509604 is a wasteful number, since it uses less digits than its factorization.

99509604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55075 (or 55073 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 99509604 is about 9975.4500650347. The cubic root of 99509604 is about 463.3989008303.

The spelling of 99509604 in words is "ninety-nine million, five hundred nine thousand, six hundred four".