139687476 has 12 divisors (see below), whose sum is σ = 325937472. Its totient is φ = 46562488.

The previous prime is 139687463. The next prime is 139687501. The reversal of 139687476 is 674786931.

139687476 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 5820300 + ... + 5820323.

It is an arithmetic number, because the mean of its divisors is an integer number (27161456).

Almost surely, 2^139687476 is an apocalyptic number.

It is an amenable number.

139687476 is an abundant number, since it is smaller than the sum of its proper divisors (186249996).

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

139687476 is a wasteful number, since it uses less digits than its factorization.

139687476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11640630 (or 11640628 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 139687476 is about 11818.9456382539. The cubic root of 139687476 is about 518.8627463651.

The spelling of 139687476 in words is "one hundred thirty-nine million, six hundred eighty-seven thousand, four hundred seventy-six".