1091395 has 4 divisors (see below), whose sum is σ = 1309680. Its totient is φ = 873112.

The previous prime is 1091393. The next prime is 1091399. The reversal of 1091395 is 5931901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1091395 - 2¹ = 1091393 is a prime.

It is a super-2 number, since 2×1091395² = 2382286092050, which contains 22 as substring.

1091395 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1091393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109135 + ... + 109144.

It is an arithmetic number, because the mean of its divisors is an integer number (327420).

2^1091395 is an apocalyptic number.

1091395 is a deficient number, since it is larger than the sum of its proper divisors (218285).

1091395 is an equidigital number, since it uses as much as digits as its factorization.

1091395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218284.

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

The square root of 1091395 is about 1044.6985211055. The cubic root of 1091395 is about 102.9581317250.

The spelling of 1091395 in words is "one million, ninety-one thousand, three hundred ninety-five".