489724999 has 2 divisors, whose sum is σ = 489725000. Its totient is φ = 489724998.

The previous prime is 489724997. The next prime is 489725009. The reversal of 489724999 is 999427984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489724999 - 2¹ = 489724997 is a prime.

Together with 489724997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489724997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244862499 + 244862500.

It is an arithmetic number, because the mean of its divisors is an integer number (244862500).

Almost surely, 2^489724999 is an apocalyptic number.

489724999 is a deficient number, since it is larger than the sum of its proper divisors (1).

489724999 is an equidigital number, since it uses as much as digits as its factorization.

489724999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 61.

The square root of 489724999 is about 22129.7311099796. The cubic root of 489724999 is about 788.2260033332.

The spelling of 489724999 in words is "four hundred eighty-nine million, seven hundred twenty-four thousand, nine hundred ninety-nine".