23867149 has 2 divisors, whose sum is σ = 23867150. Its totient is φ = 23867148.

The previous prime is 23867143. The next prime is 23867153. The reversal of 23867149 is 94176832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21921124 + 1946025 = 4682^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 23867149 - 2⁹ = 23866637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23867143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11933574 + 11933575.

It is an arithmetic number, because the mean of its divisors is an integer number (11933575).

Almost surely, 2^23867149 is an apocalyptic number.

It is an amenable number.

23867149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23867149 is an equidigital number, since it uses as much as digits as its factorization.

23867149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 23867149 is about 4885.4016211566. The cubic root of 23867149 is about 287.9166948167.

The spelling of 23867149 in words is "twenty-three million, eight hundred sixty-seven thousand, one hundred forty-nine".