13999836 has 24 divisors (see below), whose sum is σ = 32795280. Its totient is φ = 4648192.

The previous prime is 13999831. The next prime is 13999871. The reversal of 13999836 is 63899931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13999831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060 + ... + 5396.

It is an arithmetic number, because the mean of its divisors is an integer number (1366470).

Almost surely, 2^13999836 is an apocalyptic number.

It is an amenable number.

13999836 is an abundant number, since it is smaller than the sum of its proper divisors (18795444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13999836 is a wasteful number, since it uses less digits than its factorization.

13999836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613 (or 4611 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The square root of 13999836 is about 3741.6354712879. The cubic root of 13999836 is about 241.0132853107.

The spelling of 13999836 in words is "thirteen million, nine hundred ninety-nine thousand, eight hundred thirty-six".