1139152321 has 4 divisors (see below), whose sum is σ = 1140626772. Its totient is φ = 1137677872.

The previous prime is 1139152309. The next prime is 1139152331. The reversal of 1139152321 is 1232519311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232519311 = 1109 ⋅1111379.

It can be written as a sum of positive squares in 2 ways, for example, as 470412721 + 668739600 = 21689^2 + 25860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139152321 - 2⁷ = 1139152193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1139152321.

It is not an unprimeable number, because it can be changed into a prime (1139152331) 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, 736066 + ... + 737611.

It is an arithmetic number, because the mean of its divisors is an integer number (285156693).

Almost surely, 2^1139152321 is an apocalyptic number.

It is an amenable number.

1139152321 is a deficient number, since it is larger than the sum of its proper divisors (1474451).

1139152321 is an equidigital number, since it uses as much as digits as its factorization.

1139152321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474450.

The product of its digits is 1620, while the sum is 28.

The square root of 1139152321 is about 33751.3306552497. The cubic root of 1139152321 is about 1044.3849378472.

The spelling of 1139152321 in words is "one billion, one hundred thirty-nine million, one hundred fifty-two thousand, three hundred twenty-one".