13989995 has 4 divisors (see below), whose sum is σ = 16788000. Its totient is φ = 11191992.

The previous prime is 13989953. The next prime is 13990001. The reversal of 13989995 is 59998931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13989995 - 2⁶ = 13989931 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398995 + ... + 1399004.

It is an arithmetic number, because the mean of its divisors is an integer number (4197000).

Almost surely, 2^13989995 is an apocalyptic number.

13989995 is a deficient number, since it is larger than the sum of its proper divisors (2798005).

13989995 is an equidigital number, since it uses as much as digits as its factorization.

13989995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798004.

The product of its digits is 787320, while the sum is 53.

The square root of 13989995 is about 3740.3201734611. The cubic root of 13989995 is about 240.9567997037.

The spelling of 13989995 in words is "thirteen million, nine hundred eighty-nine thousand, nine hundred ninety-five".