1139321 has 2 divisors, whose sum is σ = 1139322. Its totient is φ = 1139320.

The previous prime is 1139309. The next prime is 1139329. The reversal of 1139321 is 1239311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132096 + 7225 = 1064^2 + 85^2 .

It is an emirp because it is prime and its reverse (1239311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1139321 - 2¹⁴ = 1122937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1139293 and 1139302.

It is not a weakly prime, because it can be changed into another prime (1139329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569660 + 569661.

It is an arithmetic number, because the mean of its divisors is an integer number (569661).

2^1139321 is an apocalyptic number.

It is an amenable number.

1139321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139321 is an equidigital number, since it uses as much as digits as its factorization.

1139321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 20.

The square root of 1139321 is about 1067.3898069590. The cubic root of 1139321 is about 104.4436484103.

The spelling of 1139321 in words is "one million, one hundred thirty-nine thousand, three hundred twenty-one".