839497 has 2 divisors, whose sum is σ = 839498. Its totient is φ = 839496.

The previous prime is 839491. The next prime is 839519. The reversal of 839497 is 794938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839056 + 441 = 916^2 + 21^2 .

It is a cyclic number.

It is not a de Polignac number, because 839497 - 2⁷ = 839369 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (839491) 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 as a sum of consecutive naturals, namely, 419748 + 419749.

It is an arithmetic number, because the mean of its divisors is an integer number (419749).

2⁸³⁹⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

839497 is a deficient number, since it is larger than the sum of its proper divisors (1).

839497 is an equidigital number, since it uses as much as digits as its factorization.

839497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 839497 is about 916.2406889022. The cubic root of 839497 is about 94.3350425120.

The spelling of 839497 in words is "eight hundred thirty-nine thousand, four hundred ninety-seven".