13117999 has 12 divisors (see below), whose sum is σ = 14674600. Its totient is φ = 11691648.

The previous prime is 13117969. The next prime is 13118003. The reversal of 13117999 is 99971131.

It is not a de Polignac number, because 13117999 - 2⁹ = 13117487 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13117919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4297 + ... + 6685.

Almost surely, 2^13117999 is an apocalyptic number.

13117999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13117999 is a deficient number, since it is larger than the sum of its proper divisors (1556601).

13117999 is a wasteful number, since it uses less digits than its factorization.

13117999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442 (or 2425 counting only the distinct ones).

The product of its digits is 15309, while the sum is 40.

The square root of 13117999 is about 3621.8778278677. The cubic root of 13117999 is about 235.8427505080.

The spelling of 13117999 in words is "thirteen million, one hundred seventeen thousand, nine hundred ninety-nine".