1139265239 has 16 divisors (see below), whose sum is σ = 1330056000. Its totient is φ = 975435552.

The previous prime is 1139265227. The next prime is 1139265359. The reversal of 1139265239 is 9325629311.

It is not a de Polignac number, because 1139265239 - 2¹⁶ = 1139199703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1139265196 and 1139265205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139265839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560477 + ... + 562505.

It is an arithmetic number, because the mean of its divisors is an integer number (83128500).

Almost surely, 2^1139265239 is an apocalyptic number.

1139265239 is a deficient number, since it is larger than the sum of its proper divisors (190790761).

1139265239 is an equidigital number, since it uses as much as digits as its factorization.

1139265239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687 (or 3673 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 1139265239 is about 33753.0034071044. The cubic root of 1139265239 is about 1044.4194447812.

The spelling of 1139265239 in words is "one billion, one hundred thirty-nine million, two hundred sixty-five thousand, two hundred thirty-nine".