1139235617 has 4 divisors (see below), whose sum is σ = 1226869140. Its totient is φ = 1051602096.

The previous prime is 1139235613. The next prime is 1139235641. The reversal of 1139235617 is 7165329311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 653518096 + 485717521 = 25564^2 + 22039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139235617 - 2² = 1139235613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139235613) 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, 43816742 + ... + 43816767.

It is an arithmetic number, because the mean of its divisors is an integer number (306717285).

Almost surely, 2^1139235617 is an apocalyptic number.

It is an amenable number.

1139235617 is a deficient number, since it is larger than the sum of its proper divisors (87633523).

1139235617 is an equidigital number, since it uses as much as digits as its factorization.

1139235617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87633522.

The product of its digits is 34020, while the sum is 38.

The square root of 1139235617 is about 33752.5645988568. The cubic root of 1139235617 is about 1044.4103927303.

The spelling of 1139235617 in words is "one billion, one hundred thirty-nine million, two hundred thirty-five thousand, six hundred seventeen".