13989215 has 16 divisors (see below), whose sum is σ = 18351360. Its totient is φ = 10191360.

The previous prime is 13989193. The next prime is 13989229. The reversal of 13989215 is 51298931.

It is not a de Polignac number, because 13989215 - 2¹⁴ = 13972831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20 + ... + 5289.

It is an arithmetic number, because the mean of its divisors is an integer number (1146960).

Almost surely, 2^13989215 is an apocalyptic number.

13989215 is a deficient number, since it is larger than the sum of its proper divisors (4362145).

13989215 is a wasteful number, since it uses less digits than its factorization.

13989215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362.

The product of its digits is 19440, while the sum is 38.

The square root of 13989215 is about 3740.2159028591. The cubic root of 13989215 is about 240.9523215082.

The spelling of 13989215 in words is "thirteen million, nine hundred eighty-nine thousand, two hundred fifteen".