22931789 has 2 divisors, whose sum is σ = 22931790. Its totient is φ = 22931788.

The previous prime is 22931737. The next prime is 22931809. The reversal of 22931789 is 98713922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12369289 + 10562500 = 3517^2 + 3250^2 .

It is a cyclic number.

It is not a de Polignac number, because 22931789 - 2⁸ = 22931533 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22931719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11465894 + 11465895.

It is an arithmetic number, because the mean of its divisors is an integer number (11465895).

Almost surely, 2^22931789 is an apocalyptic number.

It is an amenable number.

22931789 is a deficient number, since it is larger than the sum of its proper divisors (1).

22931789 is an equidigital number, since it uses as much as digits as its factorization.

22931789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 22931789 is about 4788.7147545036. The cubic root of 22931789 is about 284.1052848083.

The spelling of 22931789 in words is "twenty-two million, nine hundred thirty-one thousand, seven hundred eighty-nine".