440431543636 has 24 divisors (see below), whose sum is σ = 880918424960. Its totient is φ = 188744517792.

The previous prime is 440431543633. The next prime is 440431543691. The reversal of 440431543636 is 636345134044.

It is a junction number, because it is equal to n+sod(n) for n = 440431543592 and 440431543601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440431543633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32871 + ... + 939118.

Almost surely, 2^440431543636 is an apocalyptic number.

It is an amenable number.

440431543636 is an abundant number, since it is smaller than the sum of its proper divisors (440486881324).

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

440431543636 is a wasteful number, since it uses less digits than its factorization.

440431543636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988183 (or 988181 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 440431543636 in words is "four hundred forty billion, four hundred thirty-one million, five hundred forty-three thousand, six hundred thirty-six".