1347091 has 2 divisors, whose sum is σ = 1347092. Its totient is φ = 1347090.

The previous prime is 1347077. The next prime is 1347103. The reversal of 1347091 is 1907431.

It is a strong prime.

It is an emirp because it is prime and its reverse (1907431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1347091 - 2¹⁹ = 822803 is a prime.

It is a super-3 number, since 3×1347091³ = 7333512870363823713, which contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1347001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673545 + 673546.

It is an arithmetic number, because the mean of its divisors is an integer number (673546).

2^1347091 is an apocalyptic number.

1347091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347091 is an equidigital number, since it uses as much as digits as its factorization.

1347091 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1347091 is about 1160.6424944831. The cubic root of 1347091 is about 110.4415038150.

It can be divided in two parts, 134 and 7091, that added together give a square (7225 = 85²).

The spelling of 1347091 in words is "one million, three hundred forty-seven thousand, ninety-one".