422840998 has 8 divisors (see below), whose sum is σ = 637548408. Its totient is φ = 210324864.

The previous prime is 422840987. The next prime is 422841011. The reversal of 422840998 is 899048224.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547336 + ... + 548107.

It is an arithmetic number, because the mean of its divisors is an integer number (79693551).

Almost surely, 2^422840998 is an apocalyptic number.

422840998 is a deficient number, since it is larger than the sum of its proper divisors (214707410).

422840998 is a wasteful number, since it uses less digits than its factorization.

422840998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095638.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 422840998 is about 20563.0979669893. The cubic root of 422840998 is about 750.5720068925.

The spelling of 422840998 in words is "four hundred twenty-two million, eight hundred forty thousand, nine hundred ninety-eight".