99855806 has 8 divisors (see below), whose sum is σ = 151588584. Its totient is φ = 49326280.

The previous prime is 99855803. The next prime is 99855809. The reversal of 99855806 is 60855899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99855803) and next prime (99855809).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99855803) 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, 300605 + ... + 300936.

It is an arithmetic number, because the mean of its divisors is an integer number (18948573).

Almost surely, 2^99855806 is an apocalyptic number.

99855806 is a deficient number, since it is larger than the sum of its proper divisors (51732778).

99855806 is a wasteful number, since it uses less digits than its factorization.

99855806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601626.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 99855806 is about 9992.7876991358. The cubic root of 99855806 is about 463.9356796247.

The spelling of 99855806 in words is "ninety-nine million, eight hundred fifty-five thousand, eight hundred six".