9897487 has 4 divisors (see below), whose sum is σ = 9933496. Its totient is φ = 9861480.

The previous prime is 9897473. The next prime is 9897529. The reversal of 9897487 is 7847989.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7847989 = 1291 ⋅6079.

It is a cyclic number.

It is not a de Polignac number, because 9897487 - 2¹⁵ = 9864719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9897457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17589 + ... + 18142.

It is an arithmetic number, because the mean of its divisors is an integer number (2483374).

Almost surely, 2^9897487 is an apocalyptic number.

9897487 is a deficient number, since it is larger than the sum of its proper divisors (36009).

9897487 is a wasteful number, since it uses less digits than its factorization.

9897487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36008.

The product of its digits is 1016064, while the sum is 52.

The square root of 9897487 is about 3146.0271772507. The cubic root of 9897487 is about 214.7047470583.

The spelling of 9897487 in words is "nine million, eight hundred ninety-seven thousand, four hundred eighty-seven".