22388923 has 2 divisors, whose sum is σ = 22388924. Its totient is φ = 22388922.

The previous prime is 22388917. The next prime is 22388953. The reversal of 22388923 is 32988322.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22388923 is a prime.

It is not a weakly prime, because it can be changed into another prime (22388953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11194461 + 11194462.

It is an arithmetic number, because the mean of its divisors is an integer number (11194462).

Almost surely, 2^22388923 is an apocalyptic number.

22388923 is a deficient number, since it is larger than the sum of its proper divisors (1).

22388923 is an equidigital number, since it uses as much as digits as its factorization.

22388923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 22388923 is about 4731.6934600627. The cubic root of 22388923 is about 281.8454755926.

The spelling of 22388923 in words is "twenty-two million, three hundred eighty-eight thousand, nine hundred twenty-three".