23966149 has 2 divisors, whose sum is σ = 23966150. Its totient is φ = 23966148.

The previous prime is 23966113. The next prime is 23966171. The reversal of 23966149 is 94166932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17489124 + 6477025 = 4182^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 23966149 - 2⁹ = 23965637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23966749) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11983074 + 11983075.

It is an arithmetic number, because the mean of its divisors is an integer number (11983075).

Almost surely, 2^23966149 is an apocalyptic number.

It is an amenable number.

23966149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23966149 is an equidigital number, since it uses as much as digits as its factorization.

23966149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 23966149 is about 4895.5233632371. The cubic root of 23966149 is about 288.3142347231.

The spelling of 23966149 in words is "twenty-three million, nine hundred sixty-six thousand, one hundred forty-nine".