422209493 has 2 divisors, whose sum is σ = 422209494. Its totient is φ = 422209492.

The previous prime is 422209397. The next prime is 422209499. The reversal of 422209493 is 394902224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351262564 + 70946929 = 18742^2 + 8423^2 .

It is a cyclic number.

It is not a de Polignac number, because 422209493 - 2²⁴ = 405432277 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 (422209499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211104746 + 211104747.

It is an arithmetic number, because the mean of its divisors is an integer number (211104747).

Almost surely, 2^422209493 is an apocalyptic number.

It is an amenable number.

422209493 is a deficient number, since it is larger than the sum of its proper divisors (1).

422209493 is an equidigital number, since it uses as much as digits as its factorization.

422209493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 422209493 is about 20547.7369313509. The cubic root of 422209493 is about 750.1981657099.

The spelling of 422209493 in words is "four hundred twenty-two million, two hundred nine thousand, four hundred ninety-three".