8919393 has 16 divisors (see below), whose sum is σ = 13641600. Its totient is φ = 5078016.

The previous prime is 8919389. The next prime is 8919401. The reversal of 8919393 is 3939198.

It is a happy number.

8919393 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8919393 - 2² = 8919389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8919343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6721 + ... + 7937.

It is an arithmetic number, because the mean of its divisors is an integer number (852600).

Almost surely, 2^8919393 is an apocalyptic number.

It is an amenable number.

8919393 is a deficient number, since it is larger than the sum of its proper divisors (4722207).

8919393 is a wasteful number, since it uses less digits than its factorization.

8919393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576.

The product of its digits is 52488, while the sum is 42.

The square root of 8919393 is about 2986.5352835686. The cubic root of 8919393 is about 207.3855216022.

The spelling of 8919393 in words is "eight million, nine hundred nineteen thousand, three hundred ninety-three".