9897239960 has 32 divisors (see below), whose sum is σ = 22271792400. Its totient is φ = 3958362240.

The previous prime is 9897239923. The next prime is 9897239983. The reversal of 9897239960 is 699327989.

It is a junction number, because it is equal to n+sod(n) for n = 9897239893 and 9897239902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434126 + ... + 456354.

Almost surely, 2^9897239960 is an apocalyptic number.

It is an amenable number.

9897239960 is an abundant number, since it is smaller than the sum of its proper divisors (12374552440).

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

9897239960 is a wasteful number, since it uses less digits than its factorization.

9897239960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33371 (or 33367 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 62.

The square root of 9897239960 is about 99484.8730209774. The cubic root of 9897239960 is about 2147.0296070920.

The spelling of 9897239960 in words is "nine billion, eight hundred ninety-seven million, two hundred thirty-nine thousand, nine hundred sixty".