1139317287 has 8 divisors (see below), whose sum is σ = 1571472240. Its totient is φ = 733353600.

The previous prime is 1139317247. The next prime is 1139317331. The reversal of 1139317287 is 7827139311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1139317287 - 2²³ = 1130928679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139317247) 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, 6547714 + ... + 6547887.

It is an arithmetic number, because the mean of its divisors is an integer number (196434030).

Almost surely, 2^1139317287 is an apocalyptic number.

1139317287 is a deficient number, since it is larger than the sum of its proper divisors (432154953).

1139317287 is a wasteful number, since it uses less digits than its factorization.

1139317287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13095633.

The product of its digits is 63504, while the sum is 42.

The square root of 1139317287 is about 33753.7744111677. The cubic root of 1139317287 is about 1044.4353495104.

It can be divided in two parts, 11393 and 17287, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 1139317287 in words is "one billion, one hundred thirty-nine million, three hundred seventeen thousand, two hundred eighty-seven".