444620626440 has 64 divisors (see below), whose sum is σ = 1334190355200. Its totient is φ = 118536302592.

The previous prime is 444620626423. The next prime is 444620626481. The reversal of 444620626440 is 44626026444.

It is a junction number, because it is equal to n+sod(n) for n = 444620626392 and 444620626401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35304 + ... + 943656.

It is an arithmetic number, because the mean of its divisors is an integer number (20846724300).

Almost surely, 2^444620626440 is an apocalyptic number.

444620626440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444620626440 is an abundant number, since it is smaller than the sum of its proper divisors (889569728760).

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

444620626440 is a wasteful number, since it uses less digits than its factorization.

444620626440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912446 (or 912442 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 444620626440 in words is "four hundred forty-four billion, six hundred twenty million, six hundred twenty-six thousand, four hundred forty".