139911992 has 32 divisors (see below), whose sum is σ = 286902000. Its totient is φ = 63436800.

The previous prime is 139911977. The next prime is 139912027. The reversal of 139911992 is 299119931.

139911992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37742 + ... + 41282.

Almost surely, 2^139911992 is an apocalyptic number.

It is an amenable number.

139911992 is an abundant number, since it is smaller than the sum of its proper divisors (146990008).

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

139911992 is a wasteful number, since it uses less digits than its factorization.

139911992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007 (or 4003 counting only the distinct ones).

The product of its digits is 39366, while the sum is 44.

The square root of 139911992 is about 11828.4399647629. The cubic root of 139911992 is about 519.1405823729.

It can be divided in two parts, 1 and 39911992, that added together give a palindrome (39911993).

The spelling of 139911992 in words is "one hundred thirty-nine million, nine hundred eleven thousand, nine hundred ninety-two".