9897328915 has 12 divisors (see below), whose sum is σ = 12105130464. Its totient is φ = 7768458464.

The previous prime is 9897328913. The next prime is 9897328997. The reversal of 9897328915 is 5198237989.

It is not a de Polignac number, because 9897328915 - 2¹ = 9897328913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9897328913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338299 + ... + 366388.

It is an arithmetic number, because the mean of its divisors is an integer number (1008760872).

Almost surely, 2^9897328915 is an apocalyptic number.

9897328915 is a deficient number, since it is larger than the sum of its proper divisors (2207801549).

9897328915 is an equidigital number, since it uses as much as digits as its factorization.

9897328915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704798 (or 704745 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 61.

The square root of 9897328915 is about 99485.3200979923. The cubic root of 9897328915 is about 2147.0360394728.

The spelling of 9897328915 in words is "nine billion, eight hundred ninety-seven million, three hundred twenty-eight thousand, nine hundred fifteen".