13487899 has 2 divisors, whose sum is σ = 13487900. Its totient is φ = 13487898.

The previous prime is 13487879. The next prime is 13487909. The reversal of 13487899 is 99878431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13487899 - 2¹⁵ = 13455131 is a prime.

It is not a weakly prime, because it can be changed into another prime (13487819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6743949 + 6743950.

It is an arithmetic number, because the mean of its divisors is an integer number (6743950).

Almost surely, 2^13487899 is an apocalyptic number.

13487899 is a deficient number, since it is larger than the sum of its proper divisors (1).

13487899 is an equidigital number, since it uses as much as digits as its factorization.

13487899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 13487899 is about 3672.5875074666. The cubic root of 13487899 is about 238.0389915638.

The spelling of 13487899 in words is "thirteen million, four hundred eighty-seven thousand, eight hundred ninety-nine".