1139987508 has 24 divisors (see below), whose sum is σ = 2901786720. Its totient is φ = 345450720.

The previous prime is 1139987507. The next prime is 1139987531. The reversal of 1139987508 is 8057899311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139987507) 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, 4318003 + ... + 4318266.

It is an arithmetic number, because the mean of its divisors is an integer number (120907780).

Almost surely, 2^1139987508 is an apocalyptic number.

It is an amenable number.

1139987508 is an abundant number, since it is smaller than the sum of its proper divisors (1761799212).

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

1139987508 is a wasteful number, since it uses less digits than its factorization.

1139987508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8636287 (or 8636285 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 51.

The square root of 1139987508 is about 33763.7010412070. The cubic root of 1139987508 is about 1044.6401111090.

The spelling of 1139987508 in words is "one billion, one hundred thirty-nine million, nine hundred eighty-seven thousand, five hundred eight".