23869409 has 4 divisors (see below), whose sum is σ = 23957760. Its totient is φ = 23781060.

The previous prime is 23869399. The next prime is 23869427. The reversal of 23869409 is 90496832.

It is a happy number.

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 23869409 - 2⁴ = 23869393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23869459) 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, 43769 + ... + 44310.

It is an arithmetic number, because the mean of its divisors is an integer number (5989440).

Almost surely, 2^23869409 is an apocalyptic number.

It is an amenable number.

23869409 is a deficient number, since it is larger than the sum of its proper divisors (88351).

23869409 is an equidigital number, since it uses as much as digits as its factorization.

23869409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88350.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 23869409 is about 4885.6329170334. The cubic root of 23869409 is about 287.9257822196.

The spelling of 23869409 in words is "twenty-three million, eight hundred sixty-nine thousand, four hundred nine".