139382784 has 156 divisors (see below), whose sum is σ = 425932000. Its totient is φ = 43794432.

The previous prime is 139382753. The next prime is 139382797. The reversal of 139382784 is 487283931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700317 + ... + 700515.

Almost surely, 2^139382784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139382784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212966000).

139382784 is an abundant number, since it is smaller than the sum of its proper divisors (286549216).

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

139382784 is a wasteful number, since it uses less digits than its factorization.

139382784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 223 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 139382784 is about 11806.0486192460. The cubic root of 139382784 is about 518.4852169008.

The spelling of 139382784 in words is "one hundred thirty-nine million, three hundred eighty-two thousand, seven hundred eighty-four".