22237889 has 2 divisors, whose sum is σ = 22237890. Its totient is φ = 22237888.

The previous prime is 22237883. The next prime is 22237907. The reversal of 22237889 is 98873222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17472400 + 4765489 = 4180^2 + 2183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22237889 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (22237883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118944 + 11118945.

It is an arithmetic number, because the mean of its divisors is an integer number (11118945).

Almost surely, 2^22237889 is an apocalyptic number.

It is an amenable number.

22237889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22237889 is an equidigital number, since it uses as much as digits as its factorization.

22237889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 22237889 is about 4715.7066278555. The cubic root of 22237889 is about 281.2102756076.

The spelling of 22237889 in words is "twenty-two million, two hundred thirty-seven thousand, eight hundred eighty-nine".