139697684 has 12 divisors (see below), whose sum is σ = 279395424. Its totient is φ = 59870424.

The previous prime is 139697659. The next prime is 139697711. The reversal of 139697684 is 486796931.

139697684 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

139697684 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2494574 + ... + 2494629.

It is an arithmetic number, because the mean of its divisors is an integer number (23282952).

Almost surely, 2^139697684 is an apocalyptic number.

139697684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139697684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139697684 is a wasteful number, since it uses less digits than its factorization.

139697684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989214 (or 4989212 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 139697684 is about 11819.3774793768. The cubic root of 139697684 is about 518.8753851071.

The spelling of 139697684 in words is "one hundred thirty-nine million, six hundred ninety-seven thousand, six hundred eighty-four".