99849689 has 2 divisors, whose sum is σ = 99849690. Its totient is φ = 99849688.

The previous prime is 99849683. The next prime is 99849707. The reversal of 99849689 is 98694899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81144064 + 18705625 = 9008^2 + 4325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99849689 is a prime.

It is a super-3 number, since 3×99849689³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99849683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49924844 + 49924845.

It is an arithmetic number, because the mean of its divisors is an integer number (49924845).

Almost surely, 2^99849689 is an apocalyptic number.

It is an amenable number.

99849689 is a deficient number, since it is larger than the sum of its proper divisors (1).

99849689 is an equidigital number, since it uses as much as digits as its factorization.

99849689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 62.

The square root of 99849689 is about 9992.4816237009. The cubic root of 99849689 is about 463.9262061228.

The spelling of 99849689 in words is "ninety-nine million, eight hundred forty-nine thousand, six hundred eighty-nine".