99799959 has 8 divisors (see below), whose sum is σ = 152076160. Its totient is φ = 57028536.

The previous prime is 99799957. The next prime is 99799963. The reversal of 99799959 is 95999799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99799959 - 2¹ = 99799957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99799959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99799957) 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 in 7 ways as a sum of consecutive naturals, for example, 2376169 + ... + 2376210.

It is an arithmetic number, because the mean of its divisors is an integer number (19009520).

Almost surely, 2^99799959 is an apocalyptic number.

99799959 is a deficient number, since it is larger than the sum of its proper divisors (52276201).

99799959 is a wasteful number, since it uses less digits than its factorization.

99799959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752389.

The product of its digits is 18600435, while the sum is 66.

The square root of 99799959 is about 9989.9929429405. The cubic root of 99799959 is about 463.8491740636.

The spelling of 99799959 in words is "ninety-nine million, seven hundred ninety-nine thousand, nine hundred fifty-nine".