139443556 has 12 divisors (see below), whose sum is σ = 278887168. Its totient is φ = 59761512.

The previous prime is 139443547. The next prime is 139443589. The reversal of 139443556 is 655344931.

139443556 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 2490036 + ... + 2490091.

Almost surely, 2^139443556 is an apocalyptic number.

It is an amenable number.

139443556 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.

139443556 is a wasteful number, since it uses less digits than its factorization.

139443556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980138 (or 4980136 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 139443556 is about 11808.6221042084. The cubic root of 139443556 is about 518.5605605082.

The spelling of 139443556 in words is "one hundred thirty-nine million, four hundred forty-three thousand, five hundred fifty-six".