13699937 has 4 divisors (see below), whose sum is σ = 13722900. Its totient is φ = 13676976.

The previous prime is 13699921. The next prime is 13699949. The reversal of 13699937 is 73999631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 12967201 = 856^2 + 3601^2 .

It is a cyclic number.

It is not a de Polignac number, because 13699937 - 2⁴ = 13699921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13699891 and 13699900.

It is not an unprimeable number, because it can be changed into a prime (13699957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10562 + ... + 11787.

It is an arithmetic number, because the mean of its divisors is an integer number (3430725).

Almost surely, 2^13699937 is an apocalyptic number.

It is an amenable number.

13699937 is a deficient number, since it is larger than the sum of its proper divisors (22963).

13699937 is an equidigital number, since it uses as much as digits as its factorization.

13699937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22962.

The product of its digits is 275562, while the sum is 47.

The square root of 13699937 is about 3701.3425942487. The cubic root of 13699937 is about 239.2798842908.

The spelling of 13699937 in words is "thirteen million, six hundred ninety-nine thousand, nine hundred thirty-seven".