9393889 has 4 divisors (see below), whose sum is σ = 9442756. Its totient is φ = 9345024.

The previous prime is 9393871. The next prime is 9393929. The reversal of 9393889 is 9883939.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1030225 + 8363664 = 1015^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 9393889 - 2¹¹ = 9391841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9393829) 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 3 ways as a sum of consecutive naturals, for example, 24144 + ... + 24529.

It is an arithmetic number, because the mean of its divisors is an integer number (2360689).

Almost surely, 2^9393889 is an apocalyptic number.

It is an amenable number.

9393889 is a deficient number, since it is larger than the sum of its proper divisors (48867).

9393889 is a wasteful number, since it uses less digits than its factorization.

9393889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48866.

The product of its digits is 419904, while the sum is 49.

The square root of 9393889 is about 3064.9451871118. The cubic root of 9393889 is about 210.9996855412. Note that the first 3 decimals are identical.

The spelling of 9393889 in words is "nine million, three hundred ninety-three thousand, eight hundred eighty-nine".