489697499 has 2 divisors, whose sum is σ = 489697500. Its totient is φ = 489697498.

The previous prime is 489697489. The next prime is 489697501. The reversal of 489697499 is 994796984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489697499 is a prime.

Together with 489697501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (489697489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244848749 + 244848750.

It is an arithmetic number, because the mean of its divisors is an integer number (244848750).

Almost surely, 2^489697499 is an apocalyptic number.

489697499 is a deficient number, since it is larger than the sum of its proper divisors (1).

489697499 is an equidigital number, since it uses as much as digits as its factorization.

489697499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 65.

The square root of 489697499 is about 22129.1097651939. The cubic root of 489697499 is about 788.2112490522.

The spelling of 489697499 in words is "four hundred eighty-nine million, six hundred ninety-seven thousand, four hundred ninety-nine".