139044856 has 8 divisors (see below), whose sum is σ = 260709120. Its totient is φ = 69522424.

The previous prime is 139044839. The next prime is 139044881. The reversal of 139044856 is 658440931.

139044856 is digitally balanced in base 2, 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 (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8690296 + ... + 8690311.

It is an arithmetic number, because the mean of its divisors is an integer number (32588640).

Almost surely, 2^139044856 is an apocalyptic number.

It is an amenable number.

139044856 is a deficient number, since it is larger than the sum of its proper divisors (121664264).

139044856 is a wasteful number, since it uses less digits than its factorization.

139044856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17380613 (or 17380609 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 139044856 is about 11791.7282872359. The cubic root of 139044856 is about 518.0658622396.

The spelling of 139044856 in words is "one hundred thirty-nine million, forty-four thousand, eight hundred fifty-six".