22606989 has 4 divisors (see below), whose sum is σ = 30142656. Its totient is φ = 15071324.

The previous prime is 22606981. The next prime is 22606993. The reversal of 22606989 is 98960622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22606989 - 2³ = 22606981 is a prime.

It is a super-2 number, since 2×22606989² = 1022151903292242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22606989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22606981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767829 + ... + 3767834.

It is an arithmetic number, because the mean of its divisors is an integer number (7535664).

Almost surely, 2^22606989 is an apocalyptic number.

It is an amenable number.

22606989 is a deficient number, since it is larger than the sum of its proper divisors (7535667).

22606989 is an equidigital number, since it uses as much as digits as its factorization.

22606989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535666.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 22606989 is about 4754.6807463803. The cubic root of 22606989 is about 282.7575701892.

The spelling of 22606989 in words is "twenty-two million, six hundred six thousand, nine hundred eighty-nine".