22961989 has 2 divisors, whose sum is σ = 22961990. Its totient is φ = 22961988.

The previous prime is 22961977. The next prime is 22962001. The reversal of 22961989 is 98916922.

It is a balanced prime because it is at equal distance from previous prime (22961977) and next prime (22962001).

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 4169764 = 4335^2 + 2042^2 .

It is a cyclic number.

It is not a de Polignac number, because 22961989 - 2²³ = 14573381 is a prime.

It is a super-2 number, since 2×22961989² = 1054505877672242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22961959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11480994 + 11480995.

It is an arithmetic number, because the mean of its divisors is an integer number (11480995).

Almost surely, 2^22961989 is an apocalyptic number.

It is an amenable number.

22961989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22961989 is an equidigital number, since it uses as much as digits as its factorization.

22961989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The square root of 22961989 is about 4791.8669639296. The cubic root of 22961989 is about 284.2299475039.

The spelling of 22961989 in words is "twenty-two million, nine hundred sixty-one thousand, nine hundred eighty-nine".