13969616 has 20 divisors (see below), whose sum is σ = 27267972. Its totient is φ = 6932736.

The previous prime is 13969603. The next prime is 13969621. The reversal of 13969616 is 61696931.

It can be written as a sum of positive squares in 2 ways, for example, as 9985600 + 3984016 = 3160^2 + 1996^2 .

It is a congruent number.

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, 995 + ... + 5378.

Almost surely, 2^13969616 is an apocalyptic number.

13969616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13969616 is a deficient number, since it is larger than the sum of its proper divisors (13298356).

13969616 is a wasteful number, since it uses less digits than its factorization.

13969616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6518 (or 6512 counting only the distinct ones).

The product of its digits is 52488, while the sum is 41.

The square root of 13969616 is about 3737.5949486267. The cubic root of 13969616 is about 240.8397435532.

The spelling of 13969616 in words is "thirteen million, nine hundred sixty-nine thousand, six hundred sixteen".