22607989 has 2 divisors, whose sum is σ = 22607990. Its totient is φ = 22607988.

The previous prime is 22607971. The next prime is 22607993. The reversal of 22607989 is 98970622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17363889 + 5244100 = 4167^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 22607989 - 2⁵ = 22607957 is a prime.

It is a super-2 number, since 2×22607989² = 1022242333248242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22601989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11303994 + 11303995.

It is an arithmetic number, because the mean of its divisors is an integer number (11303995).

Almost surely, 2^22607989 is an apocalyptic number.

It is an amenable number.

22607989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22607989 is an equidigital number, since it uses as much as digits as its factorization.

22607989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 22607989 is about 4754.7859047490. The cubic root of 22607989 is about 282.7617393040.

The spelling of 22607989 in words is "twenty-two million, six hundred seven thousand, nine hundred eighty-nine".