9213887 has 4 divisors (see below), whose sum is σ = 9260856. Its totient is φ = 9166920.

The previous prime is 9213871. The next prime is 9213923. The reversal of 9213887 is 7883129.

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 9213887 - 2⁴ = 9213871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9213887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9213857) 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, 23189 + ... + 23582.

It is an arithmetic number, because the mean of its divisors is an integer number (2315214).

Almost surely, 2^9213887 is an apocalyptic number.

9213887 is a deficient number, since it is larger than the sum of its proper divisors (46969).

9213887 is a wasteful number, since it uses less digits than its factorization.

9213887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46968.

The product of its digits is 24192, while the sum is 38.

The square root of 9213887 is about 3035.4385185670. The cubic root of 9213887 is about 209.6432870870.

The spelling of 9213887 in words is "nine million, two hundred thirteen thousand, eight hundred eighty-seven".