99855408 has 20 divisors (see below), whose sum is σ = 257959928. Its totient is φ = 33285120.

The previous prime is 99855407. The next prime is 99855409. The reversal of 99855408 is 80455899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99855407) and next prime (99855409).

It is a super-2 number, since 2×99855408² = 19942205013692928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 2080321 = 99855408 / (9 + 9 + 8 + 5 + 5 + 4 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (99855403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040113 + ... + 1040208.

Almost surely, 2^99855408 is an apocalyptic number.

It is an amenable number.

99855408 is an abundant number, since it is smaller than the sum of its proper divisors (158104520).

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

99855408 is a wasteful number, since it uses less digits than its factorization.

99855408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080332 (or 2080326 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 99855408 is about 9992.7677847531. The cubic root of 99855408 is about 463.9350632471.

The spelling of 99855408 in words is "ninety-nine million, eight hundred fifty-five thousand, four hundred eight".