23967149 has 4 divisors (see below), whose sum is σ = 24119964. Its totient is φ = 23814336.

The previous prime is 23967143. The next prime is 23967169. The reversal of 23967149 is 94176932.

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 8702500 + 15264649 = 2950^2 + 3907^2 .

It is a cyclic number.

It is not a de Polignac number, because 23967149 - 2⁸ = 23966893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23967143) 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, 76172 + ... + 76485.

It is an arithmetic number, because the mean of its divisors is an integer number (6029991).

Almost surely, 2^23967149 is an apocalyptic number.

It is an amenable number.

23967149 is a deficient number, since it is larger than the sum of its proper divisors (152815).

23967149 is a wasteful number, since it uses less digits than its factorization.

23967149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152814.

The product of its digits is 81648, while the sum is 41.

The square root of 23967149 is about 4895.6254962977. The cubic root of 23967149 is about 288.3182446877.

The spelling of 23967149 in words is "twenty-three million, nine hundred sixty-seven thousand, one hundred forty-nine".