22990897 has 2 divisors, whose sum is σ = 22990898. Its totient is φ = 22990896.

The previous prime is 22990889. The next prime is 22990921. The reversal of 22990897 is 79809922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17901361 + 5089536 = 4231^2 + 2256^2 .

It is a cyclic number.

It is not a de Polignac number, because 22990897 - 2³ = 22990889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22990837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495448 + 11495449.

It is an arithmetic number, because the mean of its divisors is an integer number (11495449).

Almost surely, 2^22990897 is an apocalyptic number.

It is an amenable number.

22990897 is a deficient number, since it is larger than the sum of its proper divisors (1).

22990897 is an equidigital number, since it uses as much as digits as its factorization.

22990897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 22990897 is about 4794.8823760338. The cubic root of 22990897 is about 284.3491745980.

The spelling of 22990897 in words is "twenty-two million, nine hundred ninety thousand, eight hundred ninety-seven".