13724149 has 2 divisors, whose sum is σ = 13724150. Its totient is φ = 13724148.

The previous prime is 13724143. The next prime is 13724171. The reversal of 13724149 is 94142731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7524049 + 6200100 = 2743^2 + 2490^2 .

It is an emirp because it is prime and its reverse (94142731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13724149 - 2⁷ = 13724021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13724149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13724143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6862074 + 6862075.

It is an arithmetic number, because the mean of its divisors is an integer number (6862075).

Almost surely, 2^13724149 is an apocalyptic number.

It is an amenable number.

13724149 is a deficient number, since it is larger than the sum of its proper divisors (1).

13724149 is an equidigital number, since it uses as much as digits as its factorization.

13724149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 13724149 is about 3704.6118555120. The cubic root of 13724149 is about 239.4207617020.

The spelling of 13724149 in words is "thirteen million, seven hundred twenty-four thousand, one hundred forty-nine".