13939392 has 56 divisors (see below), whose sum is σ = 37388800. Its totient is φ = 4582656.

The previous prime is 13939391. The next prime is 13939411. The reversal of 13939392 is 29393931.

It is a self number, because there is not a number n which added to its sum of digits gives 13939392.

It is not an unprimeable number, because it can be changed into a prime (13939391) 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, 14709 + ... + 15627.

Almost surely, 2^13939392 is an apocalyptic number.

13939392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13939392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18694400).

13939392 is an abundant number, since it is smaller than the sum of its proper divisors (23449408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13939392 is an equidigital number, since it uses as much as digits as its factorization.

13939392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1003 counting only the distinct ones).

The product of its digits is 39366, while the sum is 39.

The square root of 13939392 is about 3733.5495175503. The cubic root of 13939392 is about 240.6659283166.

It can be divided in two parts, 1 and 3939392, that added together give a palindrome (3939393).

The spelling of 13939392 in words is "thirteen million, nine hundred thirty-nine thousand, three hundred ninety-two".