8919313 has 12 divisors (see below), whose sum is σ = 9783180. Its totient is φ = 8126976.

The previous prime is 8919301. The next prime is 8919319. The reversal of 8919313 is 3139198.

It can be written as a sum of positive squares in 6 ways, for example, as 2039184 + 6880129 = 1428^2 + 2623^2 .

It is not a de Polignac number, because 8919313 - 2²¹ = 6822161 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8919319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14745 + ... + 15337.

It is an arithmetic number, because the mean of its divisors is an integer number (815265).

Almost surely, 2^8919313 is an apocalyptic number.

It is an amenable number.

8919313 is a deficient number, since it is larger than the sum of its proper divisors (863867).

8919313 is a wasteful number, since it uses less digits than its factorization.

8919313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 695 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 8919313 is about 2986.5218900922. The cubic root of 8919313 is about 207.3849015715.

The spelling of 8919313 in words is "eight million, nine hundred nineteen thousand, three hundred thirteen".