99619808 has 24 divisors (see below), whose sum is σ = 204655248. Its totient is φ = 47643904.

The previous prime is 99619781. The next prime is 99619823. The reversal of 99619808 is 80891699.

It is a super-2 number, since 2×99619808² = 19848212291913728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66941 + ... + 68412.

It is an arithmetic number, because the mean of its divisors is an integer number (8527302).

Almost surely, 2^99619808 is an apocalyptic number.

It is an amenable number.

99619808 is an abundant number, since it is smaller than the sum of its proper divisors (105035440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99619808 is a wasteful number, since it uses less digits than its factorization.

99619808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135386 (or 135378 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 99619808 is about 9980.9722973265. The cubic root of 99619808 is about 463.5699046655.

The spelling of 99619808 in words is "ninety-nine million, six hundred nineteen thousand, eight hundred eight".