13969615 has 8 divisors (see below), whose sum is σ = 18287568. Its totient is φ = 10159680.

The previous prime is 13969603. The next prime is 13969621. The reversal of 13969615 is 51696931.

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

It is not a de Polignac number, because 13969615 - 2⁵ = 13969583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126942 + ... + 127051.

It is an arithmetic number, because the mean of its divisors is an integer number (2285946).

Almost surely, 2^13969615 is an apocalyptic number.

13969615 is a deficient number, since it is larger than the sum of its proper divisors (4317953).

13969615 is a wasteful number, since it uses less digits than its factorization.

13969615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254009.

The product of its digits is 43740, while the sum is 40.

The square root of 13969615 is about 3737.5948148509. The cubic root of 13969615 is about 240.8397378064.

It can be divided in two parts, 1396 and 9615, that added together give a palindrome (11011).

The spelling of 13969615 in words is "thirteen million, nine hundred sixty-nine thousand, six hundred fifteen".