22312889 has 2 divisors, whose sum is σ = 22312890. Its totient is φ = 22312888.

The previous prime is 22312883. The next prime is 22312903. The reversal of 22312889 is 98821322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14500864 + 7812025 = 3808^2 + 2795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22312889 is a prime.

It is a super-3 number, since 3×22312889³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22312883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11156444 + 11156445.

It is an arithmetic number, because the mean of its divisors is an integer number (11156445).

Almost surely, 2^22312889 is an apocalyptic number.

It is an amenable number.

22312889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22312889 is an equidigital number, since it uses as much as digits as its factorization.

22312889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 22312889 is about 4723.6520828698. The cubic root of 22312889 is about 281.5260595473.

The spelling of 22312889 in words is "twenty-two million, three hundred twelve thousand, eight hundred eighty-nine".