13813487 has 2 divisors, whose sum is σ = 13813488. Its totient is φ = 13813486.

The previous prime is 13813477. The next prime is 13813517. The reversal of 13813487 is 78431831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13813487 - 2¹⁴ = 13797103 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 (13813417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906743 + 6906744.

It is an arithmetic number, because the mean of its divisors is an integer number (6906744).

Almost surely, 2^13813487 is an apocalyptic number.

13813487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13813487 is an equidigital number, since it uses as much as digits as its factorization.

13813487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 13813487 is about 3716.6499700671. The cubic root of 13813487 is about 239.9391454506.

The spelling of 13813487 in words is "thirteen million, eight hundred thirteen thousand, four hundred eighty-seven".