13999997 has 8 divisors (see below), whose sum is σ = 15304512. Its totient is φ = 12700800.

The previous prime is 13999981. The next prime is 14000029. The reversal of 13999997 is 79999931.

It is a happy number.

13999997 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13999997 - 2⁴ = 13999981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13999957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5933 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (1913064).

Almost surely, 2^13999997 is an apocalyptic number.

It is an amenable number.

13999997 is a deficient number, since it is larger than the sum of its proper divisors (1304515).

13999997 is a wasteful number, since it uses less digits than its factorization.

13999997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659.

The product of its digits is 1240029, while the sum is 56.

The square root of 13999997 is about 3741.6569858821. The cubic root of 13999997 is about 241.0142092022.

The spelling of 13999997 in words is "thirteen million, nine hundred ninety-nine thousand, nine hundred ninety-seven".