2930891 has 4 divisors (see below), whose sum is σ = 2936472. Its totient is φ = 2925312.

The previous prime is 2930887. The next prime is 2930897. The reversal of 2930891 is 1980392.

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 2930891 - 2² = 2930887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2930897) 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, 1910 + ... + 3083.

It is an arithmetic number, because the mean of its divisors is an integer number (734118).

2^2930891 is an apocalyptic number.

2930891 is a deficient number, since it is larger than the sum of its proper divisors (5581).

2930891 is an equidigital number, since it uses as much as digits as its factorization.

2930891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2930891 is about 1711.9845209581. The cubic root of 2930891 is about 143.1088710746.

The spelling of 2930891 in words is "two million, nine hundred thirty thousand, eight hundred ninety-one".