22889897 has 2 divisors, whose sum is σ = 22889898. Its totient is φ = 22889896.

The previous prime is 22889887. The next prime is 22889917. The reversal of 22889897 is 79898822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12752041 + 10137856 = 3571^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 22889897 - 2⁶ = 22889833 is a prime.

It is not a weakly prime, because it can be changed into another prime (22889887) 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, 11444948 + 11444949.

It is an arithmetic number, because the mean of its divisors is an integer number (11444949).

Almost surely, 2^22889897 is an apocalyptic number.

It is an amenable number.

22889897 is a deficient number, since it is larger than the sum of its proper divisors (1).

22889897 is an equidigital number, since it uses as much as digits as its factorization.

22889897 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22889897 is about 4784.3387212864. The cubic root of 22889897 is about 283.9321773176.

The spelling of 22889897 in words is "twenty-two million, eight hundred eighty-nine thousand, eight hundred ninety-seven".