22289923 has 2 divisors, whose sum is σ = 22289924. Its totient is φ = 22289922.

The previous prime is 22289909. The next prime is 22289957. The reversal of 22289923 is 32998222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22289923 - 2⁹ = 22289411 is a prime.

It is not a weakly prime, because it can be changed into another prime (22289903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144961 + 11144962.

It is an arithmetic number, because the mean of its divisors is an integer number (11144962).

Almost surely, 2^22289923 is an apocalyptic number.

22289923 is a deficient number, since it is larger than the sum of its proper divisors (1).

22289923 is an equidigital number, since it uses as much as digits as its factorization.

22289923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 22289923 is about 4721.2204989812. The cubic root of 22289923 is about 281.4294375603.

The spelling of 22289923 in words is "twenty-two million, two hundred eighty-nine thousand, nine hundred twenty-three".