4208226391 has 2 divisors, whose sum is σ = 4208226392. Its totient is φ = 4208226390.

The previous prime is 4208226371. The next prime is 4208226467. The reversal of 4208226391 is 1936228024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4208226391 - 2¹¹ = 4208224343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4208226391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4208226301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2104113195 + 2104113196.

It is an arithmetic number, because the mean of its divisors is an integer number (2104113196).

Almost surely, 2^4208226391 is an apocalyptic number.

4208226391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4208226391 is an equidigital number, since it uses as much as digits as its factorization.

4208226391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 4208226391 is about 64870.8439208247. The cubic root of 4208226391 is about 1614.4813475106.

The spelling of 4208226391 in words is "four billion, two hundred eight million, two hundred twenty-six thousand, three hundred ninety-one".