13998907 has 8 divisors (see below), whose sum is σ = 15104880. Its totient is φ = 12897120.

The previous prime is 13998889. The next prime is 13998911. The reversal of 13998907 is 70989931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13998907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13998937) 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, 12069 + ... + 13177.

It is an arithmetic number, because the mean of its divisors is an integer number (1888110).

Almost surely, 2^13998907 is an apocalyptic number.

13998907 is a deficient number, since it is larger than the sum of its proper divisors (1105973).

13998907 is a wasteful number, since it uses less digits than its factorization.

13998907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 13998907 is about 3741.5113256544. The cubic root of 13998907 is about 241.0079541460.

The spelling of 13998907 in words is "thirteen million, nine hundred ninety-eight thousand, nine hundred seven".