1139621117 has 4 divisors (see below), whose sum is σ = 1167416796. Its totient is φ = 1111825440.

The previous prime is 1139621111. The next prime is 1139621137. The reversal of 1139621117 is 7111269311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7111269311 = 1237 ⋅5748803.

It can be written as a sum of positive squares in 2 ways, for example, as 389628121 + 749992996 = 19739^2 + 27386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139621117 - 2²⁰ = 1138572541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139621111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13897778 + ... + 13897859.

It is an arithmetic number, because the mean of its divisors is an integer number (291854199).

Almost surely, 2^1139621117 is an apocalyptic number.

It is an amenable number.

1139621117 is a deficient number, since it is larger than the sum of its proper divisors (27795679).

1139621117 is an equidigital number, since it uses as much as digits as its factorization.

1139621117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27795678.

The product of its digits is 2268, while the sum is 32.

The square root of 1139621117 is about 33758.2747930045. The cubic root of 1139621117 is about 1044.5281836407.

The spelling of 1139621117 in words is "one billion, one hundred thirty-nine million, six hundred twenty-one thousand, one hundred seventeen".