13839012 has 90 divisors (see below), whose sum is σ = 39878454. Its totient is φ = 4181760.

The previous prime is 13838987. The next prime is 13839041. The reversal of 13839012 is 21093831.

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 2509056 = 3366^2 + 1584^2 .

It is a super-2 number, since 2×13839012² = 383036506272288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 15.

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 29 ways as a sum of consecutive naturals, for example, 39028 + ... + 39380.

Almost surely, 2^13839012 is an apocalyptic number.

13839012 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 13839012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19939227).

13839012 is an abundant number, since it is smaller than the sum of its proper divisors (26039442).

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

13839012 is a wasteful number, since it uses less digits than its factorization.

13839012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13839012 is about 3720.0822571551. The cubic root of 13839012 is about 240.0868435720.

The spelling of 13839012 in words is "thirteen million, eight hundred thirty-nine thousand, twelve".