444305321440 has 24 divisors (see below), whose sum is σ = 1049671322280. Its totient is φ = 177722128512.

The previous prime is 444305321389. The next prime is 444305321443. The reversal of 444305321440 is 44123503444.

It is a junction number, because it is equal to n+sod(n) for n = 444305321396 and 444305321405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444305321443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388453970 + ... + 1388454289.

It is an arithmetic number, because the mean of its divisors is an integer number (43736305095).

Almost surely, 2^444305321440 is an apocalyptic number.

444305321440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444305321440 is an abundant number, since it is smaller than the sum of its proper divisors (605366000840).

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

444305321440 is a wasteful number, since it uses less digits than its factorization.

444305321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776908274 (or 2776908266 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 444305321440 its reverse (44123503444), we get a palindrome (488428824884).

The spelling of 444305321440 in words is "four hundred forty-four billion, three hundred five million, three hundred twenty-one thousand, four hundred forty".