9421389 has 18 divisors (see below), whose sum is σ = 13938158. Its totient is φ = 6130800.

The previous prime is 9421351. The next prime is 9421403. The reversal of 9421389 is 9831249.

9421389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5560164 + 3861225 = 2358^2 + 1965^2 .

It is not a de Polignac number, because 9421389 - 2⁷ = 9421261 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 (9421309) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 71854 + ... + 71984.

Almost surely, 2^9421389 is an apocalyptic number.

It is an amenable number.

9421389 is a deficient number, since it is larger than the sum of its proper divisors (4516769).

9421389 is a wasteful number, since it uses less digits than its factorization.

9421389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 195 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 9421389 is about 3069.4281226313. The cubic root of 9421389 is about 211.2053809106.

The spelling of 9421389 in words is "nine million, four hundred twenty-one thousand, three hundred eighty-nine".