13623149 has 2 divisors, whose sum is σ = 13623150. Its totient is φ = 13623148.

The previous prime is 13623101. The next prime is 13623179. The reversal of 13623149 is 94132631.

13623149 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11854249 + 1768900 = 3443^2 + 1330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13623149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13623179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6811574 + 6811575.

It is an arithmetic number, because the mean of its divisors is an integer number (6811575).

Almost surely, 2^13623149 is an apocalyptic number.

It is an amenable number.

13623149 is a deficient number, since it is larger than the sum of its proper divisors (1).

13623149 is an equidigital number, since it uses as much as digits as its factorization.

13623149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 13623149 is about 3690.9550254643. The cubic root of 13623149 is about 238.8319927077.

The spelling of 13623149 in words is "thirteen million, six hundred twenty-three thousand, one hundred forty-nine".