23980409 has 4 divisors (see below), whose sum is σ = 24036480. Its totient is φ = 23924340.

The previous prime is 23980399. The next prime is 23980417. The reversal of 23980409 is 90408932.

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 not a de Polignac number, because 23980409 - 2⁴ = 23980393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23980469) 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, 27389 + ... + 28250.

It is an arithmetic number, because the mean of its divisors is an integer number (6009120).

Almost surely, 2^23980409 is an apocalyptic number.

It is an amenable number.

23980409 is a deficient number, since it is larger than the sum of its proper divisors (56071).

23980409 is an equidigital number, since it uses as much as digits as its factorization.

23980409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56070.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 23980409 is about 4896.9795792917. The cubic root of 23980409 is about 288.3714062755.

It can be divided in two parts, 23980 and 409, that added together give a cube (24389 = 29³).

The spelling of 23980409 in words is "twenty-three million, nine hundred eighty thousand, four hundred nine".