13927797 has 18 divisors (see below), whose sum is σ = 21786882. Its totient is φ = 8570016.

The previous prime is 13927783. The next prime is 13927807. The reversal of 13927797 is 79772931.

13927797 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 576081 + 13351716 = 759^2 + 3654^2 .

It is not a de Polignac number, because 13927797 - 2¹⁵ = 13895029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13927297) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3058 + ... + 6099.

Almost surely, 2^13927797 is an apocalyptic number.

It is an amenable number.

13927797 is a deficient number, since it is larger than the sum of its proper divisors (7859085).

13927797 is a wasteful number, since it uses less digits than its factorization.

13927797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9189 (or 9173 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 13927797 is about 3731.9963826349. The cubic root of 13927797 is about 240.5991799360.

The spelling of 13927797 in words is "thirteen million, nine hundred twenty-seven thousand, seven hundred ninety-seven".