13907287 has 2 divisors, whose sum is σ = 13907288. Its totient is φ = 13907286.

The previous prime is 13907263. The next prime is 13907291. The reversal of 13907287 is 78270931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13907287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13907237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6953643 + 6953644.

It is an arithmetic number, because the mean of its divisors is an integer number (6953644).

Almost surely, 2^13907287 is an apocalyptic number.

13907287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13907287 is an equidigital number, since it uses as much as digits as its factorization.

13907287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 13907287 is about 3729.2475112280. The cubic root of 13907287 is about 240.4810202244.

The spelling of 13907287 in words is "thirteen million, nine hundred seven thousand, two hundred eighty-seven".