22393957 has 2 divisors, whose sum is σ = 22393958. Its totient is φ = 22393956.

The previous prime is 22393939. The next prime is 22393963. The reversal of 22393957 is 75939322.

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., 15163236 + 7230721 = 3894^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 22393957 - 2¹⁵ = 22361189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22393907) 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, 11196978 + 11196979.

It is an arithmetic number, because the mean of its divisors is an integer number (11196979).

Almost surely, 2^22393957 is an apocalyptic number.

It is an amenable number.

22393957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22393957 is an equidigital number, since it uses as much as digits as its factorization.

22393957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 22393957 is about 4732.2253750218. The cubic root of 22393957 is about 281.8665977014.

The spelling of 22393957 in words is "twenty-two million, three hundred ninety-three thousand, nine hundred fifty-seven".