9428891 has 4 divisors (see below), whose sum is σ = 9459912. Its totient is φ = 9397872.

The previous prime is 9428879. The next prime is 9428917. The reversal of 9428891 is 1988249.

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 9428891 - 2¹⁸ = 9166747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9428851) by changing a digit.

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, 15050 + ... + 15663.

It is an arithmetic number, because the mean of its divisors is an integer number (2364978).

Almost surely, 2^9428891 is an apocalyptic number.

9428891 is a deficient number, since it is larger than the sum of its proper divisors (31021).

9428891 is a wasteful number, since it uses less digits than its factorization.

9428891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31020.

The product of its digits is 41472, while the sum is 41.

The square root of 9428891 is about 3070.6499312035. The cubic root of 9428891 is about 211.2614251025.

The spelling of 9428891 in words is "nine million, four hundred twenty-eight thousand, eight hundred ninety-one".