23986409 has 4 divisors (see below), whose sum is σ = 24092304. Its totient is φ = 23880516.

The previous prime is 23986399. The next prime is 23986411. The reversal of 23986409 is 90468932.

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 23986409 - 2⁸ = 23986153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23986499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52607 + ... + 53060.

It is an arithmetic number, because the mean of its divisors is an integer number (6023076).

Almost surely, 2^23986409 is an apocalyptic number.

It is an amenable number.

23986409 is a deficient number, since it is larger than the sum of its proper divisors (105895).

23986409 is a wasteful number, since it uses less digits than its factorization.

23986409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105894.

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

The square root of 23986409 is about 4897.5921635024. The cubic root of 23986409 is about 288.3954548527.

The spelling of 23986409 in words is "twenty-three million, nine hundred eighty-six thousand, four hundred nine".