9897447826 has 8 divisors (see below), whose sum is σ = 16967053440. Its totient is φ = 4241763348.

The previous prime is 9897447811. The next prime is 9897447863. The reversal of 9897447826 is 6287447989.

9897447826 is digitally balanced in base 2, because in such base 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 super-3 number, since 3×9897447826³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 353480266 + ... + 353480293.

It is an arithmetic number, because the mean of its divisors is an integer number (2120881680).

Almost surely, 2^9897447826 is an apocalyptic number.

9897447826 is a deficient number, since it is larger than the sum of its proper divisors (7069605614).

9897447826 is a wasteful number, since it uses less digits than its factorization.

9897447826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706960568.

The product of its digits is 48771072, while the sum is 64.

The square root of 9897447826 is about 99485.9177270834. The cubic root of 9897447826 is about 2147.0446379267.

The spelling of 9897447826 in words is "nine billion, eight hundred ninety-seven million, four hundred forty-seven thousand, eight hundred twenty-six".