9897564441 has 8 divisors (see below), whose sum is σ = 13973032224. Its totient is φ = 6210236480.

The previous prime is 9897564409. The next prime is 9897564449. The reversal of 9897564441 is 1444657989.

9897564441 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9897564441 - 2⁵ = 9897564409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9897564449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97034895 + ... + 97034996.

It is an arithmetic number, because the mean of its divisors is an integer number (1746629028).

Almost surely, 2^9897564441 is an apocalyptic number.

It is an amenable number.

9897564441 is a deficient number, since it is larger than the sum of its proper divisors (4075467783).

9897564441 is a wasteful number, since it uses less digits than its factorization.

9897564441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194069911.

The product of its digits is 8709120, while the sum is 57.

The square root of 9897564441 is about 99486.5038133314. The cubic root of 9897564441 is about 2147.0530702900.

The spelling of 9897564441 in words is "nine billion, eight hundred ninety-seven million, five hundred sixty-four thousand, four hundred forty-one".