139943336 has 32 divisors (see below), whose sum is σ = 286464360. Its totient is φ = 63700992.

The previous prime is 139943317. The next prime is 139943351. The reversal of 139943336 is 633349931.

139943336 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 4 ways, for example, as 105062500 + 34880836 = 10250^2 + 5906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139943293 and 139943302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625 + ... + 16808.

Almost surely, 2^139943336 is an apocalyptic number.

It is an amenable number.

139943336 is an abundant number, since it is smaller than the sum of its proper divisors (146521024).

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

139943336 is a wasteful number, since it uses less digits than its factorization.

139943336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18525 (or 18521 counting only the distinct ones).

The product of its digits is 157464, while the sum is 41.

The square root of 139943336 is about 11829.7648328274. The cubic root of 139943336 is about 519.1793465684.

The spelling of 139943336 in words is "one hundred thirty-nine million, nine hundred forty-three thousand, three hundred thirty-six".