99716489 has 2 divisors, whose sum is σ = 99716490. Its totient is φ = 99716488.

The previous prime is 99716483. The next prime is 99716501. The reversal of 99716489 is 98461799.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86174089 + 13542400 = 9283^2 + 3680^2 .

It is an emirp because it is prime and its reverse (98461799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99716489 - 2⁸ = 99716233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99716489.

It is not a weakly prime, because it can be changed into another prime (99716483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49858244 + 49858245.

It is an arithmetic number, because the mean of its divisors is an integer number (49858245).

Almost surely, 2^99716489 is an apocalyptic number.

It is an amenable number.

99716489 is a deficient number, since it is larger than the sum of its proper divisors (1).

99716489 is an equidigital number, since it uses as much as digits as its factorization.

99716489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 99716489 is about 9985.8143884212. The cubic root of 99716489 is about 463.7198210055.

The spelling of 99716489 in words is "ninety-nine million, seven hundred sixteen thousand, four hundred eighty-nine".