139115386 has 16 divisors (see below), whose sum is σ = 221166504. Its totient is φ = 65401344.

The previous prime is 139115381. The next prime is 139115393. The reversal of 139115386 is 683511931.

It can be written as a sum of positive squares in 4 ways, for example, as 137241225 + 1874161 = 11715^2 + 1369^2 .

It is not an unprimeable number, because it can be changed into a prime (139115381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66736 + ... + 68788.

Almost surely, 2^139115386 is an apocalyptic number.

139115386 is a deficient number, since it is larger than the sum of its proper divisors (82051118).

139115386 is a wasteful number, since it uses less digits than its factorization.

139115386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065.

The product of its digits is 19440, while the sum is 37.

The square root of 139115386 is about 11794.7185638319. The cubic root of 139115386 is about 518.1534431108.

The spelling of 139115386 in words is "one hundred thirty-nine million, one hundred fifteen thousand, three hundred eighty-six".