22864973 has 2 divisors, whose sum is σ = 22864974. Its totient is φ = 22864972.

The previous prime is 22864969. The next prime is 22864979. The reversal of 22864973 is 37946822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18852964 + 4012009 = 4342^2 + 2003^2 .

It is a cyclic number.

It is not a de Polignac number, because 22864973 - 2² = 22864969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22864973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22864979) 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, 11432486 + 11432487.

It is an arithmetic number, because the mean of its divisors is an integer number (11432487).

Almost surely, 2^22864973 is an apocalyptic number.

It is an amenable number.

22864973 is a deficient number, since it is larger than the sum of its proper divisors (1).

22864973 is an equidigital number, since it uses as much as digits as its factorization.

22864973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 22864973 is about 4781.7332631589. The cubic root of 22864973 is about 283.8290853192.

The spelling of 22864973 in words is "twenty-two million, eight hundred sixty-four thousand, nine hundred seventy-three".