13439952 has 80 divisors (see below), whose sum is σ = 39372480. Its totient is φ = 4387968.

The previous prime is 13439939. The next prime is 13440001. The reversal of 13439952 is 25993431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22603 + ... + 23189.

It is an arithmetic number, because the mean of its divisors is an integer number (492156).

Almost surely, 2^13439952 is an apocalyptic number.

13439952 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 13439952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19686240).

13439952 is an abundant number, since it is smaller than the sum of its proper divisors (25932528).

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

13439952 is a wasteful number, since it uses less digits than its factorization.

13439952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 645 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 13439952 is about 3666.0540094221. The cubic root of 13439952 is about 237.7565950663.

The spelling of 13439952 in words is "thirteen million, four hundred thirty-nine thousand, nine hundred fifty-two".