4228243391 has 2 divisors, whose sum is σ = 4228243392. Its totient is φ = 4228243390.

The previous prime is 4228243361. The next prime is 4228243399. The reversal of 4228243391 is 1933428224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4228243391 - 2¹⁰ = 4228242367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4228243399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114121695 + 2114121696.

It is an arithmetic number, because the mean of its divisors is an integer number (2114121696).

Almost surely, 2^4228243391 is an apocalyptic number.

4228243391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4228243391 is an equidigital number, since it uses as much as digits as its factorization.

4228243391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The square root of 4228243391 is about 65024.9443752165. The cubic root of 4228243391 is about 1617.0371326904.

The spelling of 4228243391 in words is "four billion, two hundred twenty-eight million, two hundred forty-three thousand, three hundred ninety-one".