13907999 has 8 divisors (see below), whose sum is σ = 15943200. Its totient is φ = 11884896.

The previous prime is 13907983. The next prime is 13908001. The reversal of 13907999 is 99970931.

It is a happy number.

13907999 is digitally balanced in base 2, 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 13907999 - 2⁴ = 13907983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13907899) 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, 404 + ... + 5289.

It is an arithmetic number, because the mean of its divisors is an integer number (1992900).

Almost surely, 2^13907999 is an apocalyptic number.

13907999 is a deficient number, since it is larger than the sum of its proper divisors (2035201).

13907999 is an equidigital number, since it uses as much as digits as its factorization.

13907999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 13907999 is about 3729.3429716238. The cubic root of 13907999 is about 240.4851240577.

The spelling of 13907999 in words is "thirteen million, nine hundred seven thousand, nine hundred ninety-nine".