1100839 has 2 divisors, whose sum is σ = 1100840. Its totient is φ = 1100838.

The previous prime is 1100837. The next prime is 1100851. The reversal of 1100839 is 9380011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1100839 - 2¹ = 1100837 is a prime.

Together with 1100837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550419 + 550420.

It is an arithmetic number, because the mean of its divisors is an integer number (550420).

2^1100839 is an apocalyptic number.

1100839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100839 is an equidigital number, since it uses as much as digits as its factorization.

1100839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1100839 is about 1049.2087494870. The cubic root of 1100839 is about 103.2542498158.

The spelling of 1100839 in words is "one million, one hundred thousand, eight hundred thirty-nine".