2956891 has 8 divisors (see below), whose sum is σ = 3422720. Its totient is φ = 2501928.

The previous prime is 2956841. The next prime is 2956897. The reversal of 2956891 is 1986592.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2956891 - 2⁷ = 2956763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2956897) 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 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 3226.

It is an arithmetic number, because the mean of its divisors is an integer number (427840).

2^2956891 is an apocalyptic number.

2956891 is a deficient number, since it is larger than the sum of its proper divisors (465829).

2956891 is an equidigital number, since it uses as much as digits as its factorization.

2956891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433.

The product of its digits is 38880, while the sum is 40.

The square root of 2956891 is about 1719.5612812575. The cubic root of 2956891 is about 143.5307998816.

Subtracting from 2956891 its reverse (1986592), we obtain a cube (970299 = 99³).

The spelling of 2956891 in words is "two million, nine hundred fifty-six thousand, eight hundred ninety-one".