421593466 has 32 divisors (see below), whose sum is σ = 744936192. Its totient is φ = 175167360.

The previous prime is 421593463. The next prime is 421593479. The reversal of 421593466 is 664395124.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (421593463) 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 15 ways as a sum of consecutive naturals, for example, 159790 + ... + 162406.

It is an arithmetic number, because the mean of its divisors is an integer number (23279256).

Almost surely, 2^421593466 is an apocalyptic number.

421593466 is a deficient number, since it is larger than the sum of its proper divisors (323342726).

421593466 is a wasteful number, since it uses less digits than its factorization.

421593466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974.

The product of its digits is 155520, while the sum is 40.

The square root of 421593466 is about 20532.7413172231. The cubic root of 421593466 is about 749.8331279114.

The spelling of 421593466 in words is "four hundred twenty-one million, five hundred ninety-three thousand, four hundred sixty-six".