422452991 has 2 divisors, whose sum is σ = 422452992. Its totient is φ = 422452990.

The previous prime is 422452949. The next prime is 422453021. The reversal of 422452991 is 199254224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422452991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422452291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211226495 + 211226496.

It is an arithmetic number, because the mean of its divisors is an integer number (211226496).

Almost surely, 2^422452991 is an apocalyptic number.

422452991 is a deficient number, since it is larger than the sum of its proper divisors (1).

422452991 is an equidigital number, since it uses as much as digits as its factorization.

422452991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 422452991 is about 20553.6612553579. The cubic root of 422452991 is about 750.3423568838.

The spelling of 422452991 in words is "four hundred twenty-two million, four hundred fifty-two thousand, nine hundred ninety-one".