139043985994 has 16 divisors (see below), whose sum is σ = 221122591200. Its totient is φ = 65389104144.

The previous prime is 139043985947. The next prime is 139043986009. The reversal of 139043985994 is 499589340931.

It is a happy number.

139043985994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×139043985994³ (a number of 34 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 13156777 + ... + 13167340.

It is an arithmetic number, because the mean of its divisors is an integer number (13820161950).

Almost surely, 2^139043985994 is an apocalyptic number.

139043985994 is a deficient number, since it is larger than the sum of its proper divisors (82078605206).

139043985994 is a wasteful number, since it uses less digits than its factorization.

139043985994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26324277.

The product of its (nonzero) digits is 37791360, while the sum is 64.

The spelling of 139043985994 in words is "one hundred thirty-nine billion, forty-three million, nine hundred eighty-five thousand, nine hundred ninety-four".