139556 has 12 divisors (see below), whose sum is σ = 246960. Its totient is φ = 69000.

The previous prime is 139547. The next prime is 139571. The reversal of 139556 is 655931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (20580).

2¹³⁹⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

139556 is a deficient number, since it is larger than the sum of its proper divisors (107404).

139556 is a wasteful number, since it uses less digits than its factorization.

139556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its digits is 4050, while the sum is 29.

The square root of 139556 is about 373.5719475550. The cubic root of 139556 is about 51.8699908068.

It can be divided in two parts, 139 and 556, that multiplied together give a square (77284 = 278²).

The spelling of 139556 in words is "one hundred thirty-nine thousand, five hundred fifty-six".