99998159 has 4 divisors (see below), whose sum is σ = 105261240. Its totient is φ = 94735080.

The previous prime is 99998147. The next prime is 99998191. The reversal of 99998159 is 95189999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95189999 = 2381 ⋅39979.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99998159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99998098 and 99998107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99997159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2631512 + ... + 2631549.

It is an arithmetic number, because the mean of its divisors is an integer number (26315310).

Almost surely, 2^99998159 is an apocalyptic number.

99998159 is a deficient number, since it is larger than the sum of its proper divisors (5263081).

99998159 is a wasteful number, since it uses less digits than its factorization.

99998159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263080.

The product of its digits is 2361960, while the sum is 59.

The square root of 99998159 is about 9999.9079495763. The cubic root of 99998159 is about 464.1560349555.

The spelling of 99998159 in words is "ninety-nine million, nine hundred ninety-eight thousand, one hundred fifty-nine".