23999149 has 2 divisors, whose sum is σ = 23999150. Its totient is φ = 23999148.

The previous prime is 23999141. The next prime is 23999159. The reversal of 23999149 is 94199932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21325924 + 2673225 = 4618^2 + 1635^2 .

It is a cyclic number.

It is not a de Polignac number, because 23999149 - 2³ = 23999141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23999099 and 23999108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23999141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11999574 + 11999575.

It is an arithmetic number, because the mean of its divisors is an integer number (11999575).

Almost surely, 2^23999149 is an apocalyptic number.

It is an amenable number.

23999149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23999149 is an equidigital number, since it uses as much as digits as its factorization.

23999149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 46.

The square root of 23999149 is about 4898.8926299726. The cubic root of 23999149 is about 288.4465047035.

The spelling of 23999149 in words is "twenty-three million, nine hundred ninety-nine thousand, one hundred forty-nine".