421608446 has 24 divisors (see below), whose sum is σ = 767653200. Its totient is φ = 172832352.

The previous prime is 421608433. The next prime is 421608479. The reversal of 421608446 is 644806124.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 91271 + ... + 95778.

It is an arithmetic number, because the mean of its divisors is an integer number (31985550).

Almost surely, 2^421608446 is an apocalyptic number.

421608446 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

421608446 is a deficient number, since it is larger than the sum of its proper divisors (346044754).

421608446 is a wasteful number, since it uses less digits than its factorization.

421608446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187088 (or 187081 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 421608446 is about 20533.1060972275. The cubic root of 421608446 is about 749.8420087948.

The spelling of 421608446 in words is "four hundred twenty-one million, six hundred eight thousand, four hundred forty-six".