422605993 has 4 divisors (see below), whose sum is σ = 422950528. Its totient is φ = 422261460.

The previous prime is 422605969. The next prime is 422606053. The reversal of 422605993 is 399506224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422605993 - 2⁹ = 422605481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422605943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170421 + ... + 172882.

It is an arithmetic number, because the mean of its divisors is an integer number (105737632).

Almost surely, 2^422605993 is an apocalyptic number.

It is an amenable number.

422605993 is a deficient number, since it is larger than the sum of its proper divisors (344535).

422605993 is a wasteful number, since it uses less digits than its factorization.

422605993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344534.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 422605993 is about 20557.3829316866. The cubic root of 422605993 is about 750.4329310832.

The spelling of 422605993 in words is "four hundred twenty-two million, six hundred five thousand, nine hundred ninety-three".