139374685 has 4 divisors (see below), whose sum is σ = 167249628. Its totient is φ = 111499744.

The previous prime is 139374643. The next prime is 139374689. The reversal of 139374685 is 586473931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26399044 + 112975641 = 5138^2 + 10629^2 .

It is a cyclic number.

It is not a de Polignac number, because 139374685 - 2⁹ = 139374173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139374689) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13937464 + ... + 13937473.

It is an arithmetic number, because the mean of its divisors is an integer number (41812407).

Almost surely, 2^139374685 is an apocalyptic number.

It is an amenable number.

139374685 is a deficient number, since it is larger than the sum of its proper divisors (27874943).

139374685 is an equidigital number, since it uses as much as digits as its factorization.

139374685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27874942.

The product of its digits is 544320, while the sum is 46.

The square root of 139374685 is about 11805.7056121182. The cubic root of 139374685 is about 518.4751743093.

The spelling of 139374685 in words is "one hundred thirty-nine million, three hundred seventy-four thousand, six hundred eighty-five".