139782685 has 8 divisors (see below), whose sum is σ = 191702016. Its totient is φ = 95850960.

The previous prime is 139782667. The next prime is 139782701. The reversal of 139782685 is 586287931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139782685 - 2¹⁹ = 139258397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996861 + ... + 1996930.

It is an arithmetic number, because the mean of its divisors is an integer number (23962752).

Almost surely, 2^139782685 is an apocalyptic number.

It is an amenable number.

139782685 is a deficient number, since it is larger than the sum of its proper divisors (51919331).

139782685 is an equidigital number, since it uses as much as digits as its factorization.

139782685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993803.

The product of its digits is 725760, while the sum is 49.

The square root of 139782685 is about 11822.9727649183. The cubic root of 139782685 is about 518.9806027527.

The spelling of 139782685 in words is "one hundred thirty-nine million, seven hundred eighty-two thousand, six hundred eighty-five".