444409212840 has 32 divisors (see below), whose sum is σ = 1333227638880. Its totient is φ = 118509123392.

The previous prime is 444409212781. The next prime is 444409212857. The reversal of 444409212840 is 48212904444.

It is a junction number, because it is equal to n+sod(n) for n = 444409212792 and 444409212801.

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 7 ways as a sum of consecutive naturals, for example, 1851704934 + ... + 1851705173.

It is an arithmetic number, because the mean of its divisors is an integer number (41663363715).

Almost surely, 2^444409212840 is an apocalyptic number.

444409212840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444409212840 is an abundant number, since it is smaller than the sum of its proper divisors (888818426040).

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

444409212840 is a wasteful number, since it uses less digits than its factorization.

444409212840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703410121 (or 3703410117 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 444409212840 in words is "four hundred forty-four billion, four hundred nine million, two hundred twelve thousand, eight hundred forty".