139393338 has 24 divisors (see below), whose sum is σ = 324303552. Its totient is φ = 39826584.

The previous prime is 139393327. The next prime is 139393361. The reversal of 139393338 is 833393931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 139393338.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236770 + ... + 237357.

It is an arithmetic number, because the mean of its divisors is an integer number (13512648).

Almost surely, 2^139393338 is an apocalyptic number.

139393338 is an abundant number, since it is smaller than the sum of its proper divisors (184910214).

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

139393338 is a wasteful number, since it uses less digits than its factorization.

139393338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474146 (or 474139 counting only the distinct ones).

The product of its digits is 157464, while the sum is 42.

The square root of 139393338 is about 11806.4955850583. The cubic root of 139393338 is about 518.4983030575.

The spelling of 139393338 in words is "one hundred thirty-nine million, three hundred ninety-three thousand, three hundred thirty-eight".