23622409 has 2 divisors, whose sum is σ = 23622410. Its totient is φ = 23622408.

The previous prime is 23622383. The next prime is 23622419. The reversal of 23622409 is 90422632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 2809 = 4860^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 23622409 - 2⁷ = 23622281 is a prime.

It is not a weakly prime, because it can be changed into another prime (23622419) 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, 11811204 + 11811205.

It is an arithmetic number, because the mean of its divisors is an integer number (11811205).

Almost surely, 2^23622409 is an apocalyptic number.

It is an amenable number.

23622409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23622409 is an equidigital number, since it uses as much as digits as its factorization.

23622409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 23622409 is about 4860.2889831779. The cubic root of 23622409 is about 286.9291872870.

The spelling of 23622409 in words is "twenty-three million, six hundred twenty-two thousand, four hundred nine".