421166863 has 8 divisors (see below), whose sum is σ = 477436400. Its totient is φ = 368307648.

The previous prime is 421166861. The next prime is 421166887. The reversal of 421166863 is 368661124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421166863 - 2¹ = 421166861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421166861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852318 + ... + 852811.

It is an arithmetic number, because the mean of its divisors is an integer number (59679550).

Almost surely, 2^421166863 is an apocalyptic number.

421166863 is a deficient number, since it is larger than the sum of its proper divisors (56269537).

421166863 is a wasteful number, since it uses less digits than its factorization.

421166863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705161.

The product of its digits is 41472, while the sum is 37.

The square root of 421166863 is about 20522.3503283615. The cubic root of 421166863 is about 749.5801282467.

The spelling of 421166863 in words is "four hundred twenty-one million, one hundred sixty-six thousand, eight hundred sixty-three".