422718953 has 2 divisors, whose sum is σ = 422718954. Its totient is φ = 422718952.

The previous prime is 422718929. The next prime is 422718971. The reversal of 422718953 is 359817224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386201104 + 36517849 = 19652^2 + 6043^2 .

It is a cyclic number.

It is not a de Polignac number, because 422718953 - 2¹⁶ = 422653417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 422718953.

It is not a weakly prime, because it can be changed into another prime (422718553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211359476 + 211359477.

It is an arithmetic number, because the mean of its divisors is an integer number (211359477).

Almost surely, 2^422718953 is an apocalyptic number.

It is an amenable number.

422718953 is a deficient number, since it is larger than the sum of its proper divisors (1).

422718953 is an equidigital number, since it uses as much as digits as its factorization.

422718953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 422718953 is about 20560.1301795490. The cubic root of 422718953 is about 750.4997871727.

The spelling of 422718953 in words is "four hundred twenty-two million, seven hundred eighteen thousand, nine hundred fifty-three".