99217008 has 80 divisors (see below), whose sum is σ = 310694400. Its totient is φ = 30064320.

The previous prime is 99217003. The next prime is 99217021. The reversal of 99217008 is 80071299.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99217003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5688 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (3883680).

Almost surely, 2^99217008 is an apocalyptic number.

It is an amenable number.

99217008 is an abundant number, since it is smaller than the sum of its proper divisors (211477392).

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

99217008 is a wasteful number, since it uses less digits than its factorization.

99217008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20907 (or 20895 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 99217008 is about 9960.7734639435. The cubic root of 99217008 is about 462.9442653951.

The spelling of 99217008 in words is "ninety-nine million, two hundred seventeen thousand, eight".