422406398 has 8 divisors (see below), whose sum is σ = 633698208. Its totient is φ = 211173664.

The previous prime is 422406389. The next prime is 422406409. The reversal of 422406398 is 893604224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15590 + ... + 32982.

It is an arithmetic number, because the mean of its divisors is an integer number (79212276).

Almost surely, 2^422406398 is an apocalyptic number.

422406398 is a deficient number, since it is larger than the sum of its proper divisors (211291810).

422406398 is a wasteful number, since it uses less digits than its factorization.

422406398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29538.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 422406398 is about 20552.5277764075. The cubic root of 422406398 is about 750.3147703928.

The spelling of 422406398 in words is "four hundred twenty-two million, four hundred six thousand, three hundred ninety-eight".