13249487 has 2 divisors, whose sum is σ = 13249488. Its totient is φ = 13249486.

The previous prime is 13249463. The next prime is 13249499. The reversal of 13249487 is 78494231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13249487 - 2¹² = 13245391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13249487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13249447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6624743 + 6624744.

It is an arithmetic number, because the mean of its divisors is an integer number (6624744).

Almost surely, 2^13249487 is an apocalyptic number.

13249487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13249487 is an equidigital number, since it uses as much as digits as its factorization.

13249487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 13249487 is about 3639.9844779889. The cubic root of 13249487 is about 236.6281206372.

The spelling of 13249487 in words is "thirteen million, two hundred forty-nine thousand, four hundred eighty-seven".