9491389 has 8 divisors (see below), whose sum is σ = 10221120. Its totient is φ = 8780736.

The previous prime is 9491371. The next prime is 9491401. The reversal of 9491389 is 9831949.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9491389 - 2⁵ = 9491357 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 (9491309) 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 7 ways as a sum of consecutive naturals, for example, 3729 + ... + 5734.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^9491389 is an apocalyptic number.

It is an amenable number.

9491389 is a deficient number, since it is larger than the sum of its proper divisors (729731).

9491389 is a wasteful number, since it uses less digits than its factorization.

9491389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539.

The product of its digits is 69984, while the sum is 43.

The square root of 9491389 is about 3080.8097961413. The cubic root of 9491389 is about 211.7271692076.

The spelling of 9491389 in words is "nine million, four hundred ninety-one thousand, three hundred eighty-nine".