13839972 has 24 divisors (see below), whose sum is σ = 34193376. Its totient is φ = 4341888.

The previous prime is 13839971. The next prime is 13839983. The reversal of 13839972 is 27993831.

13839972 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13839971) 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, 33718 + ... + 34125.

It is an arithmetic number, because the mean of its divisors is an integer number (1424724).

Almost surely, 2^13839972 is an apocalyptic number.

13839972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13839972 is an abundant number, since it is smaller than the sum of its proper divisors (20353404).

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

13839972 is a wasteful number, since it uses less digits than its factorization.

13839972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67867 (or 67865 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 13839972 is about 3720.2112843224. The cubic root of 13839972 is about 240.0923949809.

The spelling of 13839972 in words is "thirteen million, eight hundred thirty-nine thousand, nine hundred seventy-two".