8423389 has 4 divisors (see below), whose sum is σ = 9071356. Its totient is φ = 7775424.

The previous prime is 8423377. The next prime is 8423407. The reversal of 8423389 is 9833248.

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 1844164 + 6579225 = 1358^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 8423389 - 2⁵ = 8423357 is a prime.

It is a d-powerful number, because it can be written as 8 + 4⁵ + 2²³ + 3⁵ + 3⁶ + 8⁵ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8423329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323964 + ... + 323989.

It is an arithmetic number, because the mean of its divisors is an integer number (2267839).

Almost surely, 2^8423389 is an apocalyptic number.

It is an amenable number.

8423389 is a deficient number, since it is larger than the sum of its proper divisors (647967).

8423389 is a wasteful number, since it uses less digits than its factorization.

8423389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647966.

The product of its digits is 41472, while the sum is 37.

The square root of 8423389 is about 2902.3075302249. The cubic root of 8423389 is about 203.4677671120.

The spelling of 8423389 in words is "eight million, four hundred twenty-three thousand, three hundred eighty-nine".