22989427 has 2 divisors, whose sum is σ = 22989428. Its totient is φ = 22989426.

The previous prime is 22989419. The next prime is 22989433. The reversal of 22989427 is 72498922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22989427 - 2³ = 22989419 is a prime.

It is not a weakly prime, because it can be changed into another prime (22989437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11494713 + 11494714.

It is an arithmetic number, because the mean of its divisors is an integer number (11494714).

Almost surely, 2^22989427 is an apocalyptic number.

22989427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22989427 is an equidigital number, since it uses as much as digits as its factorization.

22989427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 22989427 is about 4794.7290851517. The cubic root of 22989427 is about 284.3431141965.

The spelling of 22989427 in words is "twenty-two million, nine hundred eighty-nine thousand, four hundred twenty-seven".