139544939466 has 12 divisors (see below), whose sum is σ = 302347368882. Its totient is φ = 46514979816.

The previous prime is 139544939447. The next prime is 139544939483. The reversal of 139544939466 is 664939445931.

139544939466 is a `hidden beast` number, since 1 + 3 + 9 + 54 + 493 + 94 + 6 + 6 = 666.

139544939466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133221350025 + 6323589441 = 364995^2 + 79521^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3876248301 + ... + 3876248336.

Almost surely, 2^139544939466 is an apocalyptic number.

139544939466 is an abundant number, since it is smaller than the sum of its proper divisors (162802429416).

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

139544939466 is a wasteful number, since it uses less digits than its factorization.

139544939466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752496645 (or 7752496642 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 63.

The spelling of 139544939466 in words is "one hundred thirty-nine billion, five hundred forty-four million, nine hundred thirty-nine thousand, four hundred sixty-six".