23900449 has 4 divisors (see below), whose sum is σ = 23922964. Its totient is φ = 23877936.

The previous prime is 23900447. The next prime is 23900467. The reversal of 23900449 is 94400932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13010449 + 10890000 = 3607^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 23900449 - 2¹ = 23900447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23900449.

It is not an unprimeable number, because it can be changed into a prime (23900447) 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, 9582 + ... + 11815.

It is an arithmetic number, because the mean of its divisors is an integer number (5980741).

Almost surely, 2^23900449 is an apocalyptic number.

It is an amenable number.

23900449 is a deficient number, since it is larger than the sum of its proper divisors (22515).

23900449 is a wasteful number, since it uses less digits than its factorization.

23900449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22514.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 23900449 is about 4888.8085460570. The cubic root of 23900449 is about 288.0505352743.

The spelling of 23900449 in words is "twenty-three million, nine hundred thousand, four hundred forty-nine".