440047451808 has 72 divisors (see below), whose sum is σ = 1324995834708. Its totient is φ = 138054100992.

The previous prime is 440047451783. The next prime is 440047451813. The reversal of 440047451808 is 808154740044.

It can be written as a sum of positive squares in 2 ways, for example, as 356681283984 + 83366167824 = 597228^2 + 288732^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44934591 + ... + 44944382.

Almost surely, 2^440047451808 is an apocalyptic number.

440047451808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

440047451808 is an abundant number, since it is smaller than the sum of its proper divisors (884948382900).

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

440047451808 is a wasteful number, since it uses less digits than its factorization.

440047451808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89879006 (or 89878995 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 440047451808 in words is "four hundred forty billion, forty-seven million, four hundred fifty-one thousand, eight hundred eight".