4224391 has 2 divisors, whose sum is σ = 4224392. Its totient is φ = 4224390.

The previous prime is 4224383. The next prime is 4224397. The reversal of 4224391 is 1934224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4224391 - 2³ = 4224383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4224397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112195 + 2112196.

It is an arithmetic number, because the mean of its divisors is an integer number (2112196).

Almost surely, 2^4224391 is an apocalyptic number.

4224391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224391 is an equidigital number, since it uses as much as digits as its factorization.

4224391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 4224391 is about 2055.3323332250. The cubic root of 4224391 is about 161.6545884388.

The spelling of 4224391 in words is "four million, two hundred twenty-four thousand, three hundred ninety-one".