22949989 has 2 divisors, whose sum is σ = 22949990. Its totient is φ = 22949988.

The previous prime is 22949981. The next prime is 22949999. The reversal of 22949989 is 98994922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 72900 = 4783^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 22949989 - 2³ = 22949981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22949981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11474994 + 11474995.

It is an arithmetic number, because the mean of its divisors is an integer number (11474995).

Almost surely, 2^22949989 is an apocalyptic number.

It is an amenable number.

22949989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22949989 is an equidigital number, since it uses as much as digits as its factorization.

22949989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 52.

The square root of 22949989 is about 4790.6146787234. The cubic root of 22949989 is about 284.1804257529.

The spelling of 22949989 in words is "twenty-two million, nine hundred forty-nine thousand, nine hundred eighty-nine".