1139439318 has 16 divisors (see below), whose sum is σ = 2279646720. Its totient is φ = 379685096.

The previous prime is 1139439299. The next prime is 1139439359. The reversal of 1139439318 is 8139349311.

It is a self number, because there is not a number n which added to its sum of digits gives 1139439318.

It is a congruent number.

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, 11730 + ... + 49157.

It is an arithmetic number, because the mean of its divisors is an integer number (142477920).

Almost surely, 2^1139439318 is an apocalyptic number.

1139439318 is an abundant number, since it is smaller than the sum of its proper divisors (1140207402).

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

1139439318 is a wasteful number, since it uses less digits than its factorization.

1139439318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64011.

The product of its digits is 69984, while the sum is 42.

The square root of 1139439318 is about 33755.5820272737. The cubic root of 1139439318 is about 1044.4726376131.

The spelling of 1139439318 in words is "one billion, one hundred thirty-nine million, four hundred thirty-nine thousand, three hundred eighteen".