4022891 has 2 divisors, whose sum is σ = 4022892. Its totient is φ = 4022890.

The previous prime is 4022873. The next prime is 4022903. The reversal of 4022891 is 1982204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4022891 - 2⁶ = 4022827 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4022891.

It is not a weakly prime, because it can be changed into another prime (4022831) 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 as a sum of consecutive naturals, namely, 2011445 + 2011446.

It is an arithmetic number, because the mean of its divisors is an integer number (2011446).

Almost surely, 2^4022891 is an apocalyptic number.

4022891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4022891 is an equidigital number, since it uses as much as digits as its factorization.

4022891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 4022891 is about 2005.7145858771. The cubic root of 4022891 is about 159.0423393701.

It can be divided in two parts, 4022 and 891, that added together give a cube (4913 = 17³).

The spelling of 4022891 in words is "four million, twenty-two thousand, eight hundred ninety-one".