13139982 has 48 divisors (see below), whose sum is σ = 31100160. Its totient is φ = 4146552.

The previous prime is 13139947. The next prime is 13139989. The reversal of 13139982 is 28993131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8523 + ... + 9945.

It is an arithmetic number, because the mean of its divisors is an integer number (647920).

Almost surely, 2^13139982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13139982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15550080).

13139982 is an abundant number, since it is smaller than the sum of its proper divisors (17960178).

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

13139982 is a wasteful number, since it uses less digits than its factorization.

13139982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459 (or 1447 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 13139982 is about 3624.9113092599. The cubic root of 13139982 is about 235.9744178916.

The spelling of 13139982 in words is "thirteen million, one hundred thirty-nine thousand, nine hundred eighty-two".