421803396 has 96 divisors (see below), whose sum is σ = 1264032000. Its totient is φ = 119142144.

The previous prime is 421803379. The next prime is 421803397. The reversal of 421803396 is 693308124.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 421803396.

It is not an unprimeable number, because it can be changed into a prime (421803397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64150 + ... + 70418.

It is an arithmetic number, because the mean of its divisors is an integer number (13167000).

Almost surely, 2^421803396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421803396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632016000).

421803396 is an abundant number, since it is smaller than the sum of its proper divisors (842228604).

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

421803396 is a wasteful number, since it uses less digits than its factorization.

421803396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378 (or 6370 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 421803396 is about 20537.8527602084. The cubic root of 421803396 is about 749.9575655991.

The spelling of 421803396 in words is "four hundred twenty-one million, eight hundred three thousand, three hundred ninety-six".