13989937 has 8 divisors (see below), whose sum is σ = 15095360. Its totient is φ = 12888720.

The previous prime is 13989931. The next prime is 13989953. The reversal of 13989937 is 73998931.

13989937 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 not a de Polignac number, because 13989937 - 2²³ = 5601329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13989931) 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, 11362 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (1886920).

Almost surely, 2^13989937 is an apocalyptic number.

It is an amenable number.

13989937 is a deficient number, since it is larger than the sum of its proper divisors (1105423).

13989937 is a wasteful number, since it uses less digits than its factorization.

13989937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103.

The product of its digits is 367416, while the sum is 49.

The square root of 13989937 is about 3740.3124201061. The cubic root of 13989937 is about 240.9564667154.

The spelling of 13989937 in words is "thirteen million, nine hundred eighty-nine thousand, nine hundred thirty-seven".