22394609 has 2 divisors, whose sum is σ = 22394610. Its totient is φ = 22394608.

The previous prime is 22394599. The next prime is 22394623. The reversal of 22394609 is 90649322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 4963984 = 4175^2 + 2228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22394609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22394809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11197304 + 11197305.

It is an arithmetic number, because the mean of its divisors is an integer number (11197305).

Almost surely, 2^22394609 is an apocalyptic number.

It is an amenable number.

22394609 is a deficient number, since it is larger than the sum of its proper divisors (1).

22394609 is an equidigital number, since it uses as much as digits as its factorization.

22394609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 22394609 is about 4732.2942638851. The cubic root of 22394609 is about 281.8693331899.

The spelling of 22394609 in words is "twenty-two million, three hundred ninety-four thousand, six hundred nine".