9835399880 has 128 divisors (see below), whose sum is σ = 23250240000. Its totient is φ = 3739760640.

The previous prime is 9835399877. The next prime is 9835399883. The reversal of 9835399880 is 889935389.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9835399877) and next prime (9835399883).

It is not an unprimeable number, because it can be changed into a prime (9835399883) 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, 31624925 + ... + 31625235.

It is an arithmetic number, because the mean of its divisors is an integer number (181642500).

Almost surely, 2^9835399880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9835399880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11625120000).

9835399880 is an abundant number, since it is smaller than the sum of its proper divisors (13414840120).

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

9835399880 is a wasteful number, since it uses less digits than its factorization.

9835399880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 62.

The square root of 9835399880 is about 99173.5845878327. The cubic root of 9835399880 is about 2142.5485606102.

The spelling of 9835399880 in words is "nine billion, eight hundred thirty-five million, three hundred ninety-nine thousand, eight hundred eighty".