23407009 has 4 divisors (see below), whose sum is σ = 23476804. Its totient is φ = 23337216.

The previous prime is 23407001. The next prime is 23407037. The reversal of 23407009 is 90070432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4397409 + 19009600 = 2097^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 23407009 - 2³ = 23407001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23407001) 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 in 3 ways as a sum of consecutive naturals, for example, 34392 + ... + 35065.

It is an arithmetic number, because the mean of its divisors is an integer number (5869201).

Almost surely, 2^23407009 is an apocalyptic number.

It is an amenable number.

23407009 is a deficient number, since it is larger than the sum of its proper divisors (69795).

23407009 is an equidigital number, since it uses as much as digits as its factorization.

23407009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69794.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 23407009 is about 4838.0790609497. The cubic root of 23407009 is about 286.0544055137.

The spelling of 23407009 in words is "twenty-three million, four hundred seven thousand, nine".