13739831 has 8 divisors (see below), whose sum is σ = 16529280. Its totient is φ = 11157048.

The previous prime is 13739821. The next prime is 13739897. The reversal of 13739831 is 13893731.

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

It is not a de Polignac number, because 13739831 - 2⁶ = 13739767 is a prime.

It is a super-2 number, since 2×13739831² = 377565911817122, 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 = 13739791 and 13739800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13739801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51521 + ... + 51786.

It is an arithmetic number, because the mean of its divisors is an integer number (2066160).

Almost surely, 2^13739831 is an apocalyptic number.

13739831 is a deficient number, since it is larger than the sum of its proper divisors (2789449).

13739831 is a wasteful number, since it uses less digits than its factorization.

13739831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103333.

The product of its digits is 13608, while the sum is 35.

The square root of 13739831 is about 3706.7278022536. The cubic root of 13739831 is about 239.5119189562.

The spelling of 13739831 in words is "thirteen million, seven hundred thirty-nine thousand, eight hundred thirty-one".