1091339 has 2 divisors, whose sum is σ = 1091340. Its totient is φ = 1091338.

The previous prime is 1091329. The next prime is 1091359. The reversal of 1091339 is 9331901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1091339 - 2¹⁶ = 1025803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1091329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545669 + 545670.

It is an arithmetic number, because the mean of its divisors is an integer number (545670).

2^1091339 is an apocalyptic number.

1091339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091339 is an equidigital number, since it uses as much as digits as its factorization.

1091339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 1091339 is about 1044.6717187710. The cubic root of 1091339 is about 102.9563707512.

The spelling of 1091339 in words is "one million, ninety-one thousand, three hundred thirty-nine".