839009 has 2 divisors, whose sum is σ = 839010. Its totient is φ = 839008.

The previous prime is 838993. The next prime is 839029. The reversal of 839009 is 900938.

839009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 222784 = 785^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 839009 - 2⁴ = 838993 is a prime.

It is a super-2 number, since 2×839009² = 1407872204162, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (839029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419504 + 419505.

It is an arithmetic number, because the mean of its divisors is an integer number (419505).

2⁸³⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

839009 is a deficient number, since it is larger than the sum of its proper divisors (1).

839009 is an equidigital number, since it uses as much as digits as its factorization.

839009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 839009 is about 915.9743446189. The cubic root of 839009 is about 94.3167599675.

It can be divided in two parts, 83 and 9009, that multiplied together give a palindrome (747747).

The spelling of 839009 in words is "eight hundred thirty-nine thousand, nine".