497839 has 2 divisors, whose sum is σ = 497840. Its totient is φ = 497838.

The previous prime is 497831. The next prime is 497851. The reversal of 497839 is 938794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 497839 - 2³ = 497831 is a prime.

It is a Chen prime.

497839 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248919 + 248920.

It is an arithmetic number, because the mean of its divisors is an integer number (248920).

2⁴⁹⁷⁸³⁹ is an apocalyptic number.

497839 is a deficient number, since it is larger than the sum of its proper divisors (1).

497839 is an equidigital number, since it uses as much as digits as its factorization.

497839 is an evil number, because the sum of its binary digits is even.

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

The square root of 497839 is about 705.5770687884. The cubic root of 497839 is about 79.2555416784.

The spelling of 497839 in words is "four hundred ninety-seven thousand, eight hundred thirty-nine".