9942799560 has 128 divisors (see below), whose sum is σ = 31709923200. Its totient is φ = 2486937600.

The previous prime is 9942799549. The next prime is 9942799567. The reversal of 9942799560 is 659972499.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 9942799494 and 9942799503.

It is not an unprimeable number, because it can be changed into a prime (9942799567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208692 + ... + 251868.

It is an arithmetic number, because the mean of its divisors is an integer number (247733775).

Almost surely, 2^9942799560 is an apocalyptic number.

9942799560 is the 57570-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9942799560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15854961600).

9942799560 is an abundant number, since it is smaller than the sum of its proper divisors (21767123640).

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

9942799560 is a wasteful number, since it uses less digits than its factorization.

9942799560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43311 (or 43307 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 60.

The square root of 9942799560 is about 99713.5876397996. The cubic root of 9942799560 is about 2150.3190123352.

The spelling of 9942799560 in words is "nine billion, nine hundred forty-two million, seven hundred ninety-nine thousand, five hundred sixty".