23222989 has 2 divisors, whose sum is σ = 23222990. Its totient is φ = 23222988.

The previous prime is 23222963. The next prime is 23223017. The reversal of 23222989 is 98922232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 4169764 = 4365^2 + 2042^2 .

It is a cyclic number.

It is not a de Polignac number, because 23222989 - 2⁹ = 23222477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23222909) 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, 11611494 + 11611495.

It is an arithmetic number, because the mean of its divisors is an integer number (11611495).

Almost surely, 2^23222989 is an apocalyptic number.

It is an amenable number.

23222989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23222989 is an equidigital number, since it uses as much as digits as its factorization.

23222989 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23222989 is about 4819.0236563022. The cubic root of 23222989 is about 285.3028032316.

The spelling of 23222989 in words is "twenty-three million, two hundred twenty-two thousand, nine hundred eighty-nine".