4228394491 has 2 divisors, whose sum is σ = 4228394492. Its totient is φ = 4228394490.

The previous prime is 4228394461. The next prime is 4228394519. The reversal of 4228394491 is 1944938224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4228394491 is a prime.

It is not a weakly prime, because it can be changed into another prime (4228394461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114197245 + 2114197246.

It is an arithmetic number, because the mean of its divisors is an integer number (2114197246).

Almost surely, 2^4228394491 is an apocalyptic number.

4228394491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4228394491 is an equidigital number, since it uses as much as digits as its factorization.

4228394491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 46.

The square root of 4228394491 is about 65026.1062266533. The cubic root of 4228394491 is about 1617.0563945428.

The spelling of 4228394491 in words is "four billion, two hundred twenty-eight million, three hundred ninety-four thousand, four hundred ninety-one".