421850916 has 72 divisors (see below), whose sum is σ = 1114617504. Its totient is φ = 139501440.

The previous prime is 421850909. The next prime is 421850951. The reversal of 421850916 is 619058124.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125676 + ... + 128988.

Almost surely, 2^421850916 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 421850916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557308752).

421850916 is an abundant number, since it is smaller than the sum of its proper divisors (692766588).

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

421850916 is a wasteful number, since it uses less digits than its factorization.

421850916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463 (or 3449 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 421850916 is about 20539.0096158505. The cubic root of 421850916 is about 749.9857277284.

The spelling of 421850916 in words is "four hundred twenty-one million, eight hundred fifty thousand, nine hundred sixteen".