99989759 has 2 divisors, whose sum is σ = 99989760. Its totient is φ = 99989758.

The previous prime is 99989711. The next prime is 99989783. The reversal of 99989759 is 95798999.

It is a strong prime.

It is an emirp because it is prime and its reverse (95798999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99989759 - 2¹² = 99985663 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 = 99989695 and 99989704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99989159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994879 + 49994880.

It is an arithmetic number, because the mean of its divisors is an integer number (49994880).

Almost surely, 2^99989759 is an apocalyptic number.

99989759 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989759 is an equidigital number, since it uses as much as digits as its factorization.

99989759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16533720, while the sum is 65.

The square root of 99989759 is about 9999.4879368896. The cubic root of 99989759 is about 464.1430379833.

The spelling of 99989759 in words is "ninety-nine million, nine hundred eighty-nine thousand, seven hundred fifty-nine".