98999959 has 4 divisors (see below), whose sum is σ = 104823504. Its totient is φ = 93176416.

The previous prime is 98999917. The next prime is 98999963. The reversal of 98999959 is 95999989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98999959 - 2¹⁵ = 98967191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98999894 and 98999903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98999969) 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 3 ways as a sum of consecutive naturals, for example, 2911747 + ... + 2911780.

It is an arithmetic number, because the mean of its divisors is an integer number (26205876).

Almost surely, 2^98999959 is an apocalyptic number.

98999959 is a deficient number, since it is larger than the sum of its proper divisors (5823545).

98999959 is a wasteful number, since it uses less digits than its factorization.

98999959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5823544.

The product of its digits is 21257640, while the sum is 67.

The square root of 98999959 is about 9949.8723107385. The cubic root of 98999959 is about 462.6064370568.

The spelling of 98999959 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred fifty-nine".