22918899 has 4 divisors (see below), whose sum is σ = 30558536. Its totient is φ = 15279264.

The previous prime is 22918897. The next prime is 22918901. The reversal of 22918899 is 99881922.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22918897) and next prime (22918901).

It is not a de Polignac number, because 22918899 - 2¹ = 22918897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22918897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3819814 + ... + 3819819.

It is an arithmetic number, because the mean of its divisors is an integer number (7639634).

Almost surely, 2^22918899 is an apocalyptic number.

22918899 is a deficient number, since it is larger than the sum of its proper divisors (7639637).

22918899 is an equidigital number, since it uses as much as digits as its factorization.

22918899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639636.

The product of its digits is 186624, while the sum is 48.

The square root of 22918899 is about 4787.3686927163. The cubic root of 22918899 is about 284.0520428001.

The spelling of 22918899 in words is "twenty-two million, nine hundred eighteen thousand, eight hundred ninety-nine".