99808894 has 8 divisors (see below), whose sum is σ = 154875960. Its totient is φ = 48183576.

The previous prime is 99808867. The next prime is 99808901. The reversal of 99808894 is 49880899.

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

It is a super-3 number, since 3×99808894³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 860364 + ... + 860479.

It is an arithmetic number, because the mean of its divisors is an integer number (19359495).

Almost surely, 2^99808894 is an apocalyptic number.

99808894 is a deficient number, since it is larger than the sum of its proper divisors (55067066).

99808894 is a wasteful number, since it uses less digits than its factorization.

99808894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720874.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 99808894 is about 9990.4401304447. The cubic root of 99808894 is about 463.8630163161.

The spelling of 99808894 in words is "ninety-nine million, eight hundred eight thousand, eight hundred ninety-four".