99856173 has 8 divisors (see below), whose sum is σ = 133300000. Its totient is φ = 66491568.

The previous prime is 99856171. The next prime is 99856199. The reversal of 99856173 is 37165899.

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

It is not a de Polignac number, because 99856173 - 2¹ = 99856171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99856171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16798 + ... + 21951.

It is an arithmetic number, because the mean of its divisors is an integer number (16662500).

Almost surely, 2^99856173 is an apocalyptic number.

It is an amenable number.

99856173 is a deficient number, since it is larger than the sum of its proper divisors (33443827).

99856173 is a wasteful number, since it uses less digits than its factorization.

99856173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39611.

The product of its digits is 408240, while the sum is 48.

The square root of 99856173 is about 9992.8060623631. The cubic root of 99856173 is about 463.9362479915.

The spelling of 99856173 in words is "ninety-nine million, eight hundred fifty-six thousand, one hundred seventy-three".