404544011982 has 96 divisors (see below), whose sum is σ = 892628142336. Its totient is φ = 122135312640.

The previous prime is 404544011969. The next prime is 404544012029. The reversal of 404544011982 is 289110445404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 414067078 + ... + 414068054.

It is an arithmetic number, because the mean of its divisors is an integer number (9298209816).

Almost surely, 2^404544011982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404544011982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446314071168).

404544011982 is an abundant number, since it is smaller than the sum of its proper divisors (488084130354).

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

404544011982 is a wasteful number, since it uses less digits than its factorization.

404544011982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 404544011982 in words is "four hundred four billion, five hundred forty-four million, eleven thousand, nine hundred eighty-two".