139646 has 16 divisors (see below), whose sum is σ = 232848. Its totient is φ = 62400.

The previous prime is 139627. The next prime is 139661. The reversal of 139646 is 646931.

139646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (14553).

2¹³⁹⁶⁴⁶ is an apocalyptic number.

139646 is a deficient number, since it is larger than the sum of its proper divisors (93202).

139646 is a wasteful number, since it uses less digits than its factorization.

139646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187.

The product of its digits is 3888, while the sum is 29.

The square root of 139646 is about 373.6923868638. The cubic root of 139646 is about 51.8811387713.

The spelling of 139646 in words is "one hundred thirty-nine thousand, six hundred forty-six".