139828838 has 8 divisors (see below), whose sum is σ = 209869488. Its totient is φ = 69872344.

The previous prime is 139828831. The next prime is 139828841. The reversal of 139828838 is 838828931.

139828838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139828831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16706 + ... + 23637.

It is an arithmetic number, because the mean of its divisors is an integer number (26233686).

Almost surely, 2^139828838 is an apocalyptic number.

139828838 is a deficient number, since it is larger than the sum of its proper divisors (70040650).

139828838 is a wasteful number, since it uses less digits than its factorization.

139828838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42078.

The product of its digits is 663552, while the sum is 50.

The square root of 139828838 is about 11824.9244395049. The cubic root of 139828838 is about 519.0377149194.

The spelling of 139828838 in words is "one hundred thirty-nine million, eight hundred twenty-eight thousand, eight hundred thirty-eight".