13990737 has 4 divisors (see below), whose sum is σ = 18654320. Its totient is φ = 9327156.

The previous prime is 13990727. The next prime is 13990747. The reversal of 13990737 is 73709931.

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 an interprime number because it is at equal distance from previous prime (13990727) and next prime (13990747).

It is not a de Polignac number, because 13990737 - 2⁴ = 13990721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13990695 and 13990704.

It is not an unprimeable number, because it can be changed into a prime (13990727) 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, 2331787 + ... + 2331792.

It is an arithmetic number, because the mean of its divisors is an integer number (4663580).

Almost surely, 2^13990737 is an apocalyptic number.

It is an amenable number.

13990737 is a deficient number, since it is larger than the sum of its proper divisors (4663583).

13990737 is an equidigital number, since it uses as much as digits as its factorization.

13990737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663582.

The product of its (nonzero) digits is 35721, while the sum is 39.

The square root of 13990737 is about 3740.4193615155. The cubic root of 13990737 is about 240.9610595762.

The spelling of 13990737 in words is "thirteen million, nine hundred ninety thousand, seven hundred thirty-seven".