8513389 has 2 divisors, whose sum is σ = 8513390. Its totient is φ = 8513388.

The previous prime is 8513359. The next prime is 8513429. The reversal of 8513389 is 9833158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7209225 + 1304164 = 2685^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 8513389 - 2⁵ = 8513357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8513339) 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 as a sum of consecutive naturals, namely, 4256694 + 4256695.

It is an arithmetic number, because the mean of its divisors is an integer number (4256695).

Almost surely, 2^8513389 is an apocalyptic number.

It is an amenable number.

8513389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513389 is an equidigital number, since it uses as much as digits as its factorization.

8513389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 8513389 is about 2917.7712384627. The cubic root of 8513389 is about 204.1898543334.

The spelling of 8513389 in words is "eight million, five hundred thirteen thousand, three hundred eighty-nine".