99415538 has 16 divisors (see below), whose sum is σ = 156574080. Its totient is φ = 47275536.

The previous prime is 99415489. The next prime is 99415573. The reversal of 99415538 is 83551499.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8906 + ... + 16677.

It is an arithmetic number, because the mean of its divisors is an integer number (9785880).

Almost surely, 2^99415538 is an apocalyptic number.

99415538 is a deficient number, since it is larger than the sum of its proper divisors (57158542).

99415538 is a wasteful number, since it uses less digits than its factorization.

99415538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25681.

The product of its digits is 194400, while the sum is 44.

The square root of 99415538 is about 9970.7340752825. The cubic root of 99415538 is about 463.2528384683.

The spelling of 99415538 in words is "ninety-nine million, four hundred fifteen thousand, five hundred thirty-eight".