99998169 has 4 divisors (see below), whose sum is σ = 133330896. Its totient is φ = 66665444.

The previous prime is 99998147. The next prime is 99998191. The reversal of 99998169 is 96189999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96189999 = 3 ⋅32063333.

It is an interprime number because it is at equal distance from previous prime (99998147) and next prime (99998191).

It is a cyclic number.

It is not a de Polignac number, because 99998169 - 2⁸ = 99997913 is a prime.

It is a super-2 number, since 2×99998169² = 19999267606705122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99998869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16666359 + ... + 16666364.

It is an arithmetic number, because the mean of its divisors is an integer number (33332724).

Almost surely, 2^99998169 is an apocalyptic number.

It is an amenable number.

99998169 is a deficient number, since it is larger than the sum of its proper divisors (33332727).

99998169 is a wasteful number, since it uses less digits than its factorization.

99998169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33332726.

The product of its digits is 2834352, while the sum is 60.

The square root of 99998169 is about 9999.9084495809. The cubic root of 99998169 is about 464.1560504276.

The spelling of 99998169 in words is "ninety-nine million, nine hundred ninety-eight thousand, one hundred sixty-nine".