420446444 has 18 divisors (see below), whose sum is σ = 808752252. Its totient is φ = 191111800.

The previous prime is 420446401. The next prime is 420446483. The reversal of 420446444 is 444644024.

It is a self number, because there is not a number n which added to its sum of digits gives 420446444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 433862 + ... + 434829.

Almost surely, 2^420446444 is an apocalyptic number.

420446444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

420446444 is a deficient number, since it is larger than the sum of its proper divisors (388305808).

420446444 is a wasteful number, since it uses less digits than its factorization.

420446444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868717 (or 868704 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

The square root of 420446444 is about 20504.7907572840. The cubic root of 420446444 is about 749.1524909616.

The spelling of 420446444 in words is "four hundred twenty million, four hundred forty-six thousand, four hundred forty-four".