9509780444 has 12 divisors (see below), whose sum is σ = 16842623784. Its totient is φ = 4697602224.

The previous prime is 9509780429. The next prime is 9509780453. The reversal of 9509780444 is 4440879059.

It is a junction number, because it is equal to n+sod(n) for n = 9509780392 and 9509780401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14321627 + ... + 14322290.

It is an arithmetic number, because the mean of its divisors is an integer number (1403551982).

Almost surely, 2^9509780444 is an apocalyptic number.

It is an amenable number.

9509780444 is a deficient number, since it is larger than the sum of its proper divisors (7332843340).

9509780444 is a wasteful number, since it uses less digits than its factorization.

9509780444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28644004 (or 28644002 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 9509780444 is about 97518.1031603876. The cubic root of 9509780444 is about 2118.6383539944.

The spelling of 9509780444 in words is "nine billion, five hundred nine million, seven hundred eighty thousand, four hundred forty-four".