9420891 has 4 divisors (see below), whose sum is σ = 12561192. Its totient is φ = 6280592.

The previous prime is 9420877. The next prime is 9420893. The reversal of 9420891 is 1980249.

9420891 is digitally balanced in base 2, 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.

It is a cyclic number.

It is not a de Polignac number, because 9420891 - 2¹³ = 9412699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9420893) 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, 1570146 + ... + 1570151.

It is an arithmetic number, because the mean of its divisors is an integer number (3140298).

Almost surely, 2^9420891 is an apocalyptic number.

9420891 is a deficient number, since it is larger than the sum of its proper divisors (3140301).

9420891 is a wasteful number, since it uses less digits than its factorization.

9420891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140300.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 9420891 is about 3069.3469989560. The cubic root of 9420891 is about 211.2016595155.

The spelling of 9420891 in words is "nine million, four hundred twenty thousand, eight hundred ninety-one".