421984968 has 32 divisors (see below), whose sum is σ = 1069418400. Its totient is φ = 138734208.

The previous prime is 421984967. The next prime is 421985023. The reversal of 421984968 is 869489124.

It is a super-2 number, since 2×421984968² = 356142626435922048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421984968.

It is not an unprimeable number, because it can be changed into a prime (421984967) 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, 118678 + ... + 122181.

It is an arithmetic number, because the mean of its divisors is an integer number (33419325).

Almost surely, 2^421984968 is an apocalyptic number.

It is an amenable number.

421984968 is an abundant number, since it is smaller than the sum of its proper divisors (647433432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421984968 is a wasteful number, since it uses less digits than its factorization.

421984968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240941 (or 240937 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 421984968 is about 20542.2727077605. The cubic root of 421984968 is about 750.0651605609.

The spelling of 421984968 in words is "four hundred twenty-one million, nine hundred eighty-four thousand, nine hundred sixty-eight".