1191339 has 6 divisors (see below), whose sum is σ = 1720836. Its totient is φ = 794220.

The previous prime is 1191313. The next prime is 1191341. The reversal of 1191339 is 9331911.

It is a de Polignac number, because none of the positive numbers 2^k-1191339 is a prime.

It is a super-2 number, since 2×1191339² = 2838577225842, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1191439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66177 + ... + 66194.

It is an arithmetic number, because the mean of its divisors is an integer number (286806).

2^1191339 is an apocalyptic number.

1191339 is a deficient number, since it is larger than the sum of its proper divisors (529497).

1191339 is a wasteful number, since it uses less digits than its factorization.

1191339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132377 (or 132374 counting only the distinct ones).

The product of its digits is 729, while the sum is 27.

The square root of 1191339 is about 1091.4847685607. The cubic root of 1191339 is about 106.0095814289.

The spelling of 1191339 in words is "one million, one hundred ninety-one thousand, three hundred thirty-nine".