23373809 has 4 divisors (see below), whose sum is σ = 23669760. Its totient is φ = 23077860.

The previous prime is 23373769. The next prime is 23373841. The reversal of 23373809 is 90837332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23373809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23373859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147857 + ... + 148014.

It is an arithmetic number, because the mean of its divisors is an integer number (5917440).

Almost surely, 2^23373809 is an apocalyptic number.

It is an amenable number.

23373809 is a deficient number, since it is larger than the sum of its proper divisors (295951).

23373809 is an equidigital number, since it uses as much as digits as its factorization.

23373809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295950.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 23373809 is about 4834.6467295967. The cubic root of 23373809 is about 285.9190970409.

The spelling of 23373809 in words is "twenty-three million, three hundred seventy-three thousand, eight hundred nine".