9872897 has 4 divisors (see below), whose sum is σ = 9896880. Its totient is φ = 9848916.

The previous prime is 9872887. The next prime is 9872899. The reversal of 9872897 is 7982789.

It is a happy number.

9872897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9872897 - 2⁸ = 9872641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9872899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11363 + ... + 12200.

It is an arithmetic number, because the mean of its divisors is an integer number (2474220).

Almost surely, 2^9872897 is an apocalyptic number.

It is an amenable number.

9872897 is a deficient number, since it is larger than the sum of its proper divisors (23983).

9872897 is a wasteful number, since it uses less digits than its factorization.

9872897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23982.

The product of its digits is 508032, while the sum is 50.

The square root of 9872897 is about 3142.1166432836. The cubic root of 9872897 is about 214.5267905023.

The spelling of 9872897 in words is "nine million, eight hundred seventy-two thousand, eight hundred ninety-seven".