99238867 has 24 divisors (see below), whose sum is σ = 125886096. Its totient is φ = 77531328.

The previous prime is 99238831. The next prime is 99238871. The reversal of 99238867 is 76883299.

It is not a de Polignac number, because 99238867 - 2²³ = 90850259 is a prime.

It is a Smith number, since the sum of its digits (52) 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 (99238817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51933 + ... + 53809.

It is an arithmetic number, because the mean of its divisors is an integer number (5245254).

Almost surely, 2^99238867 is an apocalyptic number.

99238867 is the 8134-th pentagonal number.

99238867 is a deficient number, since it is larger than the sum of its proper divisors (26647229).

99238867 is a wasteful number, since it uses less digits than its factorization.

99238867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987 (or 1980 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 99238867 is about 9961.8706576626. The cubic root of 99238867 is about 462.9782607615.

The spelling of 99238867 in words is "ninety-nine million, two hundred thirty-eight thousand, eight hundred sixty-seven".