404442266646 has 32 divisors (see below), whose sum is σ = 882791065728. Its totient is φ = 122506655040.

The previous prime is 404442266629. The next prime is 404442266731. The reversal of 404442266646 is 646662244404.

It is a junction number, because it is equal to n+sod(n) for n = 404442266595 and 404442266604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1132120 + ... + 1445883.

It is an arithmetic number, because the mean of its divisors is an integer number (27587220804).

Almost surely, 2^404442266646 is an apocalyptic number.

404442266646 is an abundant number, since it is smaller than the sum of its proper divisors (478348799082).

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

404442266646 is a wasteful number, since it uses less digits than its factorization.

404442266646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580396.

The product of its (nonzero) digits is 5308416, while the sum is 48.

The spelling of 404442266646 in words is "four hundred four billion, four hundred forty-two million, two hundred sixty-six thousand, six hundred forty-six".