139380912 has 120 divisors (see below), whose sum is σ = 441430080. Its totient is φ = 42223680.

The previous prime is 139380911. The next prime is 139380947. The reversal of 139380912 is 219083931.

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

It is not an unprimeable number, because it can be changed into a prime (139380911) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 41139 + ... + 44397.

It is an arithmetic number, because the mean of its divisors is an integer number (3678584).

Almost surely, 2^139380912 is an apocalyptic number.

139380912 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 139380912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220715040).

139380912 is an abundant number, since it is smaller than the sum of its proper divisors (302049168).

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

139380912 is a wasteful number, since it uses less digits than its factorization.

139380912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293 (or 3275 counting only the distinct ones).

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

The square root of 139380912 is about 11805.9693375851. The cubic root of 139380912 is about 518.4828956943.

The spelling of 139380912 in words is "one hundred thirty-nine million, three hundred eighty thousand, nine hundred twelve".