1139689512 has 48 divisors (see below), whose sum is σ = 3324097140. Its totient is φ = 350673408.

The previous prime is 1139689493. The next prime is 1139689513. The reversal of 1139689512 is 2159869311.

It can be written as a sum of positive squares in 2 ways, for example, as 918453636 + 221235876 = 30306^2 + 14874^2 .

It is not an unprimeable number, because it can be changed into a prime (1139689513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607873 + ... + 609744.

Almost surely, 2^1139689512 is an apocalyptic number.

1139689512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1139689512 is an abundant number, since it is smaller than the sum of its proper divisors (2184407628).

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

1139689512 is a wasteful number, since it uses less digits than its factorization.

1139689512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217642 (or 1217635 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1139689512 is about 33759.2877886960. The cubic root of 1139689512 is about 1044.5490792041.

The spelling of 1139689512 in words is "one billion, one hundred thirty-nine million, six hundred eighty-nine thousand, five hundred twelve".