9890867 has 4 divisors (see below), whose sum is σ = 11303856. Its totient is φ = 8477880.

The previous prime is 9890863. The next prime is 9890869. The reversal of 9890867 is 7680989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9890867 - 2² = 9890863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9890863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706484 + ... + 706497.

It is an arithmetic number, because the mean of its divisors is an integer number (2825964).

Almost surely, 2^9890867 is an apocalyptic number.

9890867 is a deficient number, since it is larger than the sum of its proper divisors (1412989).

9890867 is a wasteful number, since it uses less digits than its factorization.

9890867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412988.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 9890867 is about 3144.9748806628. The cubic root of 9890867 is about 214.6568674826.

The spelling of 9890867 in words is "nine million, eight hundred ninety thousand, eight hundred sixty-seven".