13990694 has 8 divisors (see below), whose sum is σ = 22220568. Its totient is φ = 6583840.

The previous prime is 13990687. The next prime is 13990721. The reversal of 13990694 is 49609931.

Added to its reverse (49609931) it gives a square (63600625 = 7975²).

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

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, 205712 + ... + 205779.

It is an arithmetic number, because the mean of its divisors is an integer number (2777571).

Almost surely, 2^13990694 is an apocalyptic number.

13990694 is a deficient number, since it is larger than the sum of its proper divisors (8229874).

13990694 is a wasteful number, since it uses less digits than its factorization.

13990694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411510.

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

The square root of 13990694 is about 3740.4136134925. The cubic root of 13990694 is about 240.9608127144.

Adding to 13990694 its reverse (49609931), we get a square (63600625 = 7975²).

The spelling of 13990694 in words is "thirteen million, nine hundred ninety thousand, six hundred ninety-four".