1095391 has 4 divisors (see below), whose sum is σ = 1194984. Its totient is φ = 995800.

The previous prime is 1095349. The next prime is 1095401. The reversal of 1095391 is 1935901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1935901 = 11 ⋅175991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1095391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1095091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49780 + ... + 49801.

It is an arithmetic number, because the mean of its divisors is an integer number (298746).

2^1095391 is an apocalyptic number.

1095391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1095391 is a deficient number, since it is larger than the sum of its proper divisors (99593).

1095391 is an equidigital number, since it uses as much as digits as its factorization.

1095391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99592.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1095391 is about 1046.6092871745. The cubic root of 1095391 is about 103.0836345882.

The spelling of 1095391 in words is "one million, ninety-five thousand, three hundred ninety-one".