22813009 has 2 divisors, whose sum is σ = 22813010. Its totient is φ = 22813008.

The previous prime is 22812947. The next prime is 22813019. The reversal of 22813009 is 90031822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20930625 + 1882384 = 4575^2 + 1372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22813009 is a prime.

It is not a weakly prime, because it can be changed into another prime (22813019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11406504 + 11406505.

It is an arithmetic number, because the mean of its divisors is an integer number (11406505).

Almost surely, 2^22813009 is an apocalyptic number.

It is an amenable number.

22813009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22813009 is an equidigital number, since it uses as much as digits as its factorization.

22813009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22813009 is about 4776.2965778938. The cubic root of 22813009 is about 283.6139078404.

The spelling of 22813009 in words is "twenty-two million, eight hundred thirteen thousand, nine".