440187781044 has 48 divisors (see below), whose sum is σ = 1121417599680. Its totient is φ = 133278378240.

The previous prime is 440187781013. The next prime is 440187781123.

440187781044 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 440187780984 and 440187781002.

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, 1240159 + ... + 1555110.

It is an arithmetic number, because the mean of its divisors is an integer number (23362866660).

Almost surely, 2^440187781044 is an apocalyptic number.

440187781044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

440187781044 is an abundant number, since it is smaller than the sum of its proper divisors (681229818636).

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

440187781044 is a wasteful number, since it uses less digits than its factorization.

440187781044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796480 (or 2796478 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 48.

The spelling of 440187781044 in words is "four hundred forty billion, one hundred eighty-seven million, seven hundred eighty-one thousand, forty-four".