22988897 has 2 divisors, whose sum is σ = 22988898. Its totient is φ = 22988896.

The previous prime is 22988893. The next prime is 22988899. The reversal of 22988897 is 79888922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18011536 + 4977361 = 4244^2 + 2231^2 .

It is a cyclic number.

It is not a de Polignac number, because 22988897 - 2² = 22988893 is a prime.

Together with 22988899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22988893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11494448 + 11494449.

It is an arithmetic number, because the mean of its divisors is an integer number (11494449).

Almost surely, 2^22988897 is an apocalyptic number.

It is an amenable number.

22988897 is a deficient number, since it is larger than the sum of its proper divisors (1).

22988897 is an equidigital number, since it uses as much as digits as its factorization.

22988897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 53.

The square root of 22988897 is about 4794.6738158085. The cubic root of 22988897 is about 284.3409290905.

The spelling of 22988897 in words is "twenty-two million, nine hundred eighty-eight thousand, eight hundred ninety-seven".