13999637 has 4 divisors (see below), whose sum is σ = 14736480. Its totient is φ = 13262796.

The previous prime is 13999621. The next prime is 13999651. The reversal of 13999637 is 73699931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13999637 - 2⁴ = 13999621 is a prime.

It is a super-2 number, since 2×13999637² = 391979672263538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13999591 and 13999600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13999537) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 368393 + ... + 368430.

It is an arithmetic number, because the mean of its divisors is an integer number (3684120).

Almost surely, 2^13999637 is an apocalyptic number.

It is an amenable number.

13999637 is a deficient number, since it is larger than the sum of its proper divisors (736843).

13999637 is an equidigital number, since it uses as much as digits as its factorization.

13999637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736842.

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

The square root of 13999637 is about 3741.6088785441. The cubic root of 13999637 is about 241.0121433480.

The spelling of 13999637 in words is "thirteen million, nine hundred ninety-nine thousand, six hundred thirty-seven".