4227997091 has 2 divisors, whose sum is σ = 4227997092. Its totient is φ = 4227997090.

The previous prime is 4227997079. The next prime is 4227997127. The reversal of 4227997091 is 1907997224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4227997091 - 2⁶ = 4227997027 is a prime.

It is not a weakly prime, because it can be changed into another prime (4227997051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2113998545 + 2113998546.

It is an arithmetic number, because the mean of its divisors is an integer number (2113998546).

Almost surely, 2^4227997091 is an apocalyptic number.

4227997091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4227997091 is an equidigital number, since it uses as much as digits as its factorization.

4227997091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 4227997091 is about 65023.0504590488. The cubic root of 4227997091 is about 1617.0057339949.

The spelling of 4227997091 in words is "four billion, two hundred twenty-seven million, nine hundred ninety-seven thousand, ninety-one".