139909782 has 16 divisors (see below), whose sum is σ = 291985920. Its totient is φ = 44608872.

The previous prime is 139909769. The next prime is 139909799. The reversal of 139909782 is 287909931.

139909782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506782 + ... + 507057.

It is an arithmetic number, because the mean of its divisors is an integer number (18249120).

Almost surely, 2^139909782 is an apocalyptic number.

139909782 is an abundant number, since it is smaller than the sum of its proper divisors (152076138).

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

139909782 is a wasteful number, since it uses less digits than its factorization.

139909782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013867.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 139909782 is about 11828.3465454813. The cubic root of 139909782 is about 519.1378489719.

The spelling of 139909782 in words is "one hundred thirty-nine million, nine hundred nine thousand, seven hundred eighty-two".