4222391 has 2 divisors, whose sum is σ = 4222392. Its totient is φ = 4222390.

The previous prime is 4222381. The next prime is 4222397. The reversal of 4222391 is 1932224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4222391 - 2²² = 28087 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2 + 2⁷ + 2¹³ + 3⁹ + 9² + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4222397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111195 + 2111196.

It is an arithmetic number, because the mean of its divisors is an integer number (2111196).

Almost surely, 2^4222391 is an apocalyptic number.

4222391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4222391 is an equidigital number, since it uses as much as digits as its factorization.

4222391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 4222391 is about 2054.8457363024. The cubic root of 4222391 is about 161.6290731071.

The spelling of 4222391 in words is "four million, two hundred twenty-two thousand, three hundred ninety-one".