492839 has 2 divisors, whose sum is σ = 492840. Its totient is φ = 492838.
The previous prime is 492799. The next prime is 492853. The reversal of 492839 is 938294.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 492839 - 212 = 488743 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 492799 and 492808.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (497839) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246419 + 246420.
It is an arithmetic number, because the mean of its divisors is an integer number (246420).
2492839 is an apocalyptic number.
492839 is a deficient number, since it is larger than the sum of its proper divisors (1).
492839 is an equidigital number, since it uses as much as digits as its factorization.
492839 is an evil number, because the sum of its binary digits is even.
The product of its digits is 15552, while the sum is 35.
The square root of 492839 is about 702.0249283323. The cubic root of 492839 is about 78.9893165065.
Subtracting from 492839 its sum of digits (35), we obtain a square (492804 = 7022).
It can be divided in two parts, 492 and 839, that added together give a palindrome (1331).
The spelling of 492839 in words is "four hundred ninety-two thousand, eight hundred thirty-nine".
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