1109387 has 2 divisors, whose sum is σ = 1109388. Its totient is φ = 1109386.

The previous prime is 1109363. The next prime is 1109393. The reversal of 1109387 is 7839011.

It is a strong prime.

It is an emirp because it is prime and its reverse (7839011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109387 - 2¹⁰ = 1108363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1109327) 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 as a sum of consecutive naturals, namely, 554693 + 554694.

It is an arithmetic number, because the mean of its divisors is an integer number (554694).

2^1109387 is an apocalyptic number.

1109387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109387 is an equidigital number, since it uses as much as digits as its factorization.

1109387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1109387 is about 1053.2744181836. The cubic root of 1109387 is about 103.5208169910.

The spelling of 1109387 in words is "one million, one hundred nine thousand, three hundred eighty-seven".