23390609 has 16 divisors (see below), whose sum is σ = 27095040. Its totient is φ = 19982160.

The previous prime is 23390603. The next prime is 23390611. The reversal of 23390609 is 90609332.

It is not a de Polignac number, because 23390609 - 2⁴ = 23390593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23390603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14144 + ... + 15710.

It is an arithmetic number, because the mean of its divisors is an integer number (1693440).

Almost surely, 2^23390609 is an apocalyptic number.

It is an amenable number.

23390609 is a deficient number, since it is larger than the sum of its proper divisors (3704431).

23390609 is a wasteful number, since it uses less digits than its factorization.

23390609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 23390609 is about 4836.3838764101. The cubic root of 23390609 is about 285.9875823907.

The spelling of 23390609 in words is "twenty-three million, three hundred ninety thousand, six hundred nine".