422091907 has 2 divisors, whose sum is σ = 422091908. Its totient is φ = 422091906.

The previous prime is 422091881. The next prime is 422091919. The reversal of 422091907 is 709190224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422091907 - 2¹⁵ = 422059139 is a prime.

It is not a weakly prime, because it can be changed into another prime (422091937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211045953 + 211045954.

It is an arithmetic number, because the mean of its divisors is an integer number (211045954).

Almost surely, 2^422091907 is an apocalyptic number.

422091907 is a deficient number, since it is larger than the sum of its proper divisors (1).

422091907 is an equidigital number, since it uses as much as digits as its factorization.

422091907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 422091907 is about 20544.8754437694. The cubic root of 422091907 is about 750.1285154586.

The spelling of 422091907 in words is "four hundred twenty-two million, ninety-one thousand, nine hundred seven".