422657089 has 2 divisors, whose sum is σ = 422657090. Its totient is φ = 422657088.

The previous prime is 422657063. The next prime is 422657093. The reversal of 422657089 is 980756224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342250000 + 80407089 = 18500^2 + 8967^2 .

It is a cyclic number.

It is not a de Polignac number, because 422657089 - 2¹⁹ = 422132801 is a prime.

It is not a weakly prime, because it can be changed into another prime (422657789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211328544 + 211328545.

It is an arithmetic number, because the mean of its divisors is an integer number (211328545).

Almost surely, 2^422657089 is an apocalyptic number.

It is an amenable number.

422657089 is a deficient number, since it is larger than the sum of its proper divisors (1).

422657089 is an equidigital number, since it uses as much as digits as its factorization.

422657089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 422657089 is about 20558.6256593188. The cubic root of 422657089 is about 750.4631740490.

The spelling of 422657089 in words is "four hundred twenty-two million, six hundred fifty-seven thousand, eighty-nine".