139013684 has 12 divisors (see below), whose sum is σ = 243358500. Its totient is φ = 69482688.

The previous prime is 139013683. The next prime is 139013701. The reversal of 139013684 is 486310931.

It can be written as a sum of positive squares in 2 ways, for example, as 39413284 + 99600400 = 6278^2 + 9980^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139013683) 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 3 ways as a sum of consecutive naturals, for example, 15242 + ... + 22590.

It is an arithmetic number, because the mean of its divisors is an integer number (20279875).

Almost surely, 2^139013684 is an apocalyptic number.

It is an amenable number.

139013684 is a deficient number, since it is larger than the sum of its proper divisors (104344816).

139013684 is a wasteful number, since it uses less digits than its factorization.

139013684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12082 (or 12080 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 139013684 is about 11790.4064391352. The cubic root of 139013684 is about 518.0271448633.

The spelling of 139013684 in words is "one hundred thirty-nine million, thirteen thousand, six hundred eighty-four".