13387249 has 2 divisors, whose sum is σ = 13387250. Its totient is φ = 13387248.

The previous prime is 13387201. The next prime is 13387273. The reversal of 13387249 is 94278331.

13387249 is digitally balanced in base 2 and base 3, because in such bases 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., 13359025 + 28224 = 3655^2 + 168^2 .

It is a cyclic number.

It is not a de Polignac number, because 13387249 - 2¹³ = 13379057 is a prime.

It is not a weakly prime, because it can be changed into another prime (13387849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6693624 + 6693625.

It is an arithmetic number, because the mean of its divisors is an integer number (6693625).

Almost surely, 2^13387249 is an apocalyptic number.

It is an amenable number.

13387249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13387249 is an equidigital number, since it uses as much as digits as its factorization.

13387249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 13387249 is about 3658.8589751451. The cubic root of 13387249 is about 237.4454109071.

The spelling of 13387249 in words is "thirteen million, three hundred eighty-seven thousand, two hundred forty-nine".