421846438 has 16 divisors (see below), whose sum is σ = 681786000. Its totient is φ = 194600736.

The previous prime is 421846433. The next prime is 421846507. The reversal of 421846438 is 834648124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421846438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421846433) 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, 88656 + ... + 93292.

It is an arithmetic number, because the mean of its divisors is an integer number (42611625).

Almost surely, 2^421846438 is an apocalyptic number.

421846438 is a deficient number, since it is larger than the sum of its proper divisors (259939562).

421846438 is a wasteful number, since it uses less digits than its factorization.

421846438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151.

The product of its digits is 147456, while the sum is 40.

The square root of 421846438 is about 20538.9006034890. The cubic root of 421846438 is about 749.9830739884.

The spelling of 421846438 in words is "four hundred twenty-one million, eight hundred forty-six thousand, four hundred thirty-eight".