420446840444 has 24 divisors (see below), whose sum is σ = 777452269440. Its totient is φ = 198401761584.

The previous prime is 420446840413. The next prime is 420446840449. The reversal of 420446840444 is 444048644024.

It is a junction number, because it is equal to n+sod(n) for n = 420446840395 and 420446840404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420446840449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10497494 + ... + 10537469.

It is an arithmetic number, because the mean of its divisors is an integer number (32393844560).

Almost surely, 2^420446840444 is an apocalyptic number.

It is an amenable number.

420446840444 is a deficient number, since it is larger than the sum of its proper divisors (357005428996).

420446840444 is a wasteful number, since it uses less digits than its factorization.

420446840444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21035249 (or 21035247 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 44.

The spelling of 420446840444 in words is "four hundred twenty billion, four hundred forty-six million, eight hundred forty thousand, four hundred forty-four".