3090891 has 4 divisors (see below), whose sum is σ = 4121192. Its totient is φ = 2060592.

The previous prime is 3090887. The next prime is 3090959. The reversal of 3090891 is 1980903.

It is a happy number.

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

It is not a de Polignac number, because 3090891 - 2² = 3090887 is a prime.

It is a D-number.

It is a Duffinian number.

3090891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3090851) 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, 515146 + ... + 515151.

It is an arithmetic number, because the mean of its divisors is an integer number (1030298).

Almost surely, 2^3090891 is an apocalyptic number.

3090891 is a deficient number, since it is larger than the sum of its proper divisors (1030301).

3090891 is a wasteful number, since it uses less digits than its factorization.

3090891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030300.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 3090891 is about 1758.0930009530. The cubic root of 3090891 is about 145.6670180899.

The spelling of 3090891 in words is "three million, ninety thousand, eight hundred ninety-one".