489431 has 2 divisors, whose sum is σ = 489432. Its totient is φ = 489430.

The previous prime is 489427. The next prime is 489439. The reversal of 489431 is 134984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489431 - 2² = 489427 is a prime.

It is a super-3 number, since 3×489431³ = 351718875133349973, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 489394 and 489403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244715 + 244716.

It is an arithmetic number, because the mean of its divisors is an integer number (244716).

2⁴⁸⁹⁴³¹ is an apocalyptic number.

489431 is a deficient number, since it is larger than the sum of its proper divisors (1).

489431 is an equidigital number, since it uses as much as digits as its factorization.

489431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 489431 is about 699.5934533713. The cubic root of 489431 is about 78.8068238570.

The spelling of 489431 in words is "four hundred eighty-nine thousand, four hundred thirty-one".