23900232409 has 9 divisors (see below), whose sum is σ = 24701030901. Its totient is φ = 23124619260.

The previous prime is 23900232403. The next prime is 23900232457. The reversal of 23900232409 is 90423200932.

It is a happy number.

The square root of 23900232409 is 154597.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 23900232409 - 2²⁷ = 23766014681 is a prime.

It is a super-2 number, since 2×23900232409² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23900232403) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4790014 + ... + 4795000.

It is an arithmetic number, because the mean of its divisors is an integer number (2744558989).

Almost surely, 2^23900232409 is an apocalyptic number.

23900232409 is the 154597-th square number.

23900232409 is the 77299-th centered octagonal number.

It is an amenable number.

23900232409 is a deficient number, since it is larger than the sum of its proper divisors (800798492).

23900232409 is an frugal number, since it uses more digits than its factorization.

23900232409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10036 (or 5018 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 23900232409 in words is "twenty-three billion, nine hundred million, two hundred thirty-two thousand, four hundred nine".