9820440312 has 64 divisors (see below), whose sum is σ = 25150849920. Its totient is φ = 3194429568.

The previous prime is 9820440299. The next prime is 9820440313. The reversal of 9820440312 is 2130440289.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9820440313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143518 + ... + 200594.

It is an arithmetic number, because the mean of its divisors is an integer number (392982030).

Almost surely, 2^9820440312 is an apocalyptic number.

It is an amenable number.

9820440312 is an abundant number, since it is smaller than the sum of its proper divisors (15330409608).

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

9820440312 is a wasteful number, since it uses less digits than its factorization.

9820440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57260 (or 57256 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 9820440312 is about 99098.1347554029. The cubic root of 9820440312 is about 2141.4617427515.

The spelling of 9820440312 in words is "nine billion, eight hundred twenty million, four hundred forty thousand, three hundred twelve".