404440020312 has 64 divisors (see below), whose sum is σ = 1032960384000. Its totient is φ = 131928835584.

The previous prime is 404440020241. The next prime is 404440020331. The reversal of 404440020312 is 213020044404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729612 + ... + 1158107.

It is an arithmetic number, because the mean of its divisors is an integer number (16140006000).

Almost surely, 2^404440020312 is an apocalyptic number.

It is an amenable number.

404440020312 is an abundant number, since it is smaller than the sum of its proper divisors (628520363688).

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

404440020312 is a wasteful number, since it uses less digits than its factorization.

404440020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887920 (or 1887916 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 404440020312 its reverse (213020044404), we get a palindrome (617460064716).

The spelling of 404440020312 in words is "four hundred four billion, four hundred forty million, twenty thousand, three hundred twelve".