422979 has 8 divisors (see below), whose sum is σ = 567120. Its totient is φ = 280416.

The previous prime is 422969. The next prime is 422987. The reversal of 422979 is 979224.

422979 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 422979 - 2¹² = 418883 is a prime.

It is a super-2 number, since 2×422979² = 357822468882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422979.

It is not an unprimeable number, because it can be changed into a prime (422969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (70890).

2⁴²²⁹⁷⁹ is an apocalyptic number.

422979 is a deficient number, since it is larger than the sum of its proper divisors (144141).

422979 is a wasteful number, since it uses less digits than its factorization.

422979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789.

The product of its digits is 9072, while the sum is 33.

The square root of 422979 is about 650.3683571638. The cubic root of 422979 is about 75.0653652375.

The spelling of 422979 in words is "four hundred twenty-two thousand, nine hundred seventy-nine".