99997198 has 16 divisors (see below), whose sum is σ = 171738720. Its totient is φ = 42777216.

The previous prime is 99997189. The next prime is 99997243. The reversal of 99997198 is 89179999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690 + ... + 14242.

It is an arithmetic number, because the mean of its divisors is an integer number (10733670).

Almost surely, 2^99997198 is an apocalyptic number.

99997198 is a deficient number, since it is larger than the sum of its proper divisors (71741522).

99997198 is a wasteful number, since it uses less digits than its factorization.

99997198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13131.

The product of its digits is 3306744, while the sum is 61.

The square root of 99997198 is about 9999.8598990186. The cubic root of 99997198 is about 464.1545480768.

The spelling of 99997198 in words is "ninety-nine million, nine hundred ninety-seven thousand, one hundred ninety-eight".