99217895 has 16 divisors (see below), whose sum is σ = 138849600. Its totient is φ = 68033952.

The previous prime is 99217817. The next prime is 99217901. The reversal of 99217895 is 59871299.

It is a happy number.

It is not a de Polignac number, because 99217895 - 2¹² = 99213799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27212 + ... + 30641.

It is an arithmetic number, because the mean of its divisors is an integer number (8678100).

Almost surely, 2^99217895 is an apocalyptic number.

99217895 is a deficient number, since it is larger than the sum of its proper divisors (39631705).

99217895 is an equidigital number, since it uses as much as digits as its factorization.

99217895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57879 (or 57865 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 99217895 is about 9960.8179884987. The cubic root of 99217895 is about 462.9456449648.

The spelling of 99217895 in words is "ninety-nine million, two hundred seventeen thousand, eight hundred ninety-five".