2085391 has 24 divisors (see below), whose sum is σ = 2733264. Its totient is φ = 1572480.

The previous prime is 2085379. The next prime is 2085409. The reversal of 2085391 is 1935802.

It is not a de Polignac number, because 2085391 - 2¹¹ = 2083343 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 (2085311) 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 23 ways as a sum of consecutive naturals, for example, 28531 + ... + 28603.

It is an arithmetic number, because the mean of its divisors is an integer number (113886).

2^2085391 is an apocalyptic number.

2085391 is a deficient number, since it is larger than the sum of its proper divisors (647873).

2085391 is a wasteful number, since it uses less digits than its factorization.

2085391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2085391 is about 1444.0882936995. The cubic root of 2085391 is about 127.7602731465.

The spelling of 2085391 in words is "two million, eighty-five thousand, three hundred ninety-one".