1091347 has 4 divisors (see below), whose sum is σ = 1102696. Its totient is φ = 1080000.

The previous prime is 1091339. The next prime is 1091359. The reversal of 1091347 is 7431901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7431901 = 179 ⋅41519.

It is a cyclic number.

It is not a de Polignac number, because 1091347 - 2³ = 1091339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1091047) 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, 5529 + ... + 5722.

It is an arithmetic number, because the mean of its divisors is an integer number (275674).

2^1091347 is an apocalyptic number.

1091347 is a deficient number, since it is larger than the sum of its proper divisors (11349).

1091347 is an equidigital number, since it uses as much as digits as its factorization.

1091347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11348.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1091347 is about 1044.6755477180. The cubic root of 1091347 is about 102.9566223226.

The spelling of 1091347 in words is "one million, ninety-one thousand, three hundred forty-seven".