9163889 has 4 divisors (see below), whose sum is σ = 10473024. Its totient is φ = 7854756.

The previous prime is 9163873. The next prime is 9163897. The reversal of 9163889 is 9883619.

9163889 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9163889 - 2⁴ = 9163873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9163829) 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, 654557 + ... + 654570.

It is an arithmetic number, because the mean of its divisors is an integer number (2618256).

Almost surely, 2^9163889 is an apocalyptic number.

It is an amenable number.

9163889 is a deficient number, since it is larger than the sum of its proper divisors (1309135).

9163889 is a wasteful number, since it uses less digits than its factorization.

9163889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309134.

The product of its digits is 93312, while the sum is 44.

The square root of 9163889 is about 3027.1916027896. The cubic root of 9163889 is about 209.2633981316.

The spelling of 9163889 in words is "nine million, one hundred sixty-three thousand, eight hundred eighty-nine".