2096891 has 4 divisors (see below), whose sum is σ = 2099832. Its totient is φ = 2093952.

The previous prime is 2096881. The next prime is 2096893. The reversal of 2096891 is 1986902.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1986902 = 2 ⋅993451.

It is a cyclic number.

It is not a de Polignac number, because 2096891 - 2¹⁰ = 2095867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2096893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (524958).

2^2096891 is an apocalyptic number.

2096891 is a deficient number, since it is larger than the sum of its proper divisors (2941).

2096891 is a wasteful number, since it uses less digits than its factorization.

2096891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2096891 is about 1448.0645703835. The cubic root of 2096891 is about 127.9946897211.

The spelling of 2096891 in words is "two million, ninety-six thousand, eight hundred ninety-one".