22989919 has 2 divisors, whose sum is σ = 22989920. Its totient is φ = 22989918.

The previous prime is 22989859. The next prime is 22989929. The reversal of 22989919 is 91998922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22989919 - 2¹³ = 22981727 is a prime.

It is a super-2 number, since 2×22989919² = 1057072751253122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22989929) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11494959 + 11494960.

It is an arithmetic number, because the mean of its divisors is an integer number (11494960).

Almost surely, 2^22989919 is an apocalyptic number.

22989919 is a deficient number, since it is larger than the sum of its proper divisors (1).

22989919 is an equidigital number, since it uses as much as digits as its factorization.

22989919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 49.

The square root of 22989919 is about 4794.7803912171. The cubic root of 22989919 is about 284.3451426045.

The spelling of 22989919 in words is "twenty-two million, nine hundred eighty-nine thousand, nine hundred nineteen".