99539415 has 32 divisors (see below), whose sum is σ = 177681600. Its totient is φ = 52871040.

The previous prime is 99539411. The next prime is 99539417. The reversal of 99539415 is 51493599.

It is a happy number.

It is not a de Polignac number, because 99539415 - 2² = 99539411 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99539411) 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 31 ways as a sum of consecutive naturals, for example, 34945 + ... + 37685.

It is an arithmetic number, because the mean of its divisors is an integer number (5552550).

Almost surely, 2^99539415 is an apocalyptic number.

99539415 is a deficient number, since it is larger than the sum of its proper divisors (78142185).

99539415 is a wasteful number, since it uses less digits than its factorization.

99539415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3018 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 99539415 is about 9976.9441714385. The cubic root of 99539415 is about 463.4451710890.

The spelling of 99539415 in words is "ninety-nine million, five hundred thirty-nine thousand, four hundred fifteen".