2091395 has 4 divisors (see below), whose sum is σ = 2509680. Its totient is φ = 1673112.

The previous prime is 2091389. The next prime is 2091409. The reversal of 2091395 is 5931902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5931902 = 2 ⋅2965951.

It is a cyclic number.

It is not a de Polignac number, because 2091395 - 2⁴ = 2091379 is a prime.

It is an Ulam number.

It is an unprimeable number.

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, 209135 + ... + 209144.

It is an arithmetic number, because the mean of its divisors is an integer number (627420).

2^2091395 is an apocalyptic number.

2091395 is a deficient number, since it is larger than the sum of its proper divisors (418285).

2091395 is an equidigital number, since it uses as much as digits as its factorization.

2091395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418284.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 2091395 is about 1446.1656198375. The cubic root of 2091395 is about 127.8827661948.

The spelling of 2091395 in words is "two million, ninety-one thousand, three hundred ninety-five".