108172899 has 12 divisors (see below), whose sum is σ = 156702000. Its totient is φ = 71906544.

The previous prime is 108172891. The next prime is 108172903. The reversal of 108172899 is 998271801.

It is not a de Polignac number, because 108172899 - 2³ = 108172891 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 not an unprimeable number, because it can be changed into a prime (108172891) 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, 14079 + ... + 20360.

It is an arithmetic number, because the mean of its divisors is an integer number (13058500).

Almost surely, 2^108172899 is an apocalyptic number.

108172899 is a deficient number, since it is larger than the sum of its proper divisors (48529101).

108172899 is a wasteful number, since it uses less digits than its factorization.

108172899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34794 (or 34791 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 108172899 is about 10400.6201257425. The cubic root of 108172899 is about 476.4743097775.

The spelling of 108172899 in words is "one hundred eight million, one hundred seventy-two thousand, eight hundred ninety-nine".