422450989 has 2 divisors, whose sum is σ = 422450990. Its totient is φ = 422450988.

The previous prime is 422450957. The next prime is 422451011. The reversal of 422450989 is 989054224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357777225 + 64673764 = 18915^2 + 8042^2 .

It is a cyclic number.

It is not a de Polignac number, because 422450989 - 2⁵ = 422450957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422450929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211225494 + 211225495.

It is an arithmetic number, because the mean of its divisors is an integer number (211225495).

Almost surely, 2^422450989 is an apocalyptic number.

It is an amenable number.

422450989 is a deficient number, since it is larger than the sum of its proper divisors (1).

422450989 is an equidigital number, since it uses as much as digits as its factorization.

422450989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 422450989 is about 20553.6125535148. The cubic root of 422450989 is about 750.3411715939.

The spelling of 422450989 in words is "four hundred twenty-two million, four hundred fifty thousand, nine hundred eighty-nine".