421173486 has 32 divisors (see below), whose sum is σ = 955860480. Its totient is φ = 137403288.

The previous prime is 421173481. The next prime is 421173497. The reversal of 421173486 is 684371124.

421173486 is a `hidden beast` number, since 4 + 2 + 1 + 173 + 486 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 421173486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421173481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80436 + ... + 85511.

It is an arithmetic number, because the mean of its divisors is an integer number (29870640).

Almost surely, 2^421173486 is an apocalyptic number.

421173486 is an abundant number, since it is smaller than the sum of its proper divisors (534686994).

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

421173486 is a wasteful number, since it uses less digits than its factorization.

421173486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166005 (or 165999 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 421173486 is about 20522.5116883875. The cubic root of 421173486 is about 749.5840573649.

The spelling of 421173486 in words is "four hundred twenty-one million, one hundred seventy-three thousand, four hundred eighty-six".