23912149 has 12 divisors (see below), whose sum is σ = 25693444. Its totient is φ = 22247424.

The previous prime is 23912131. The next prime is 23912173. The reversal of 23912149 is 94121932.

It can be written as a sum of positive squares in 6 ways, for example, as 49 + 23912100 = 7^2 + 4890^2 .

It is not a de Polignac number, because 23912149 - 2⁹ = 23911637 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 23912149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23912179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27607 + ... + 28459.

Almost surely, 2^23912149 is an apocalyptic number.

It is an amenable number.

23912149 is a deficient number, since it is larger than the sum of its proper divisors (1781295).

23912149 is an equidigital number, since it uses as much as digits as its factorization.

23912149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 967 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 23912149 is about 4890.0050102224. The cubic root of 23912149 is about 288.0975307858.

It can be divided in two parts, 239121 and 49, that multiplied together give a square (11716929 = 3423²).

The spelling of 23912149 in words is "twenty-three million, nine hundred twelve thousand, one hundred forty-nine".