99669798 has 64 divisors (see below), whose sum is σ = 228510720. Its totient is φ = 32186016.

The previous prime is 99669769. The next prime is 99669809. The reversal of 99669798 is 89796699.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438961 + ... + 439187.

It is an arithmetic number, because the mean of its divisors is an integer number (3570480).

Almost surely, 2^99669798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99669798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114255360).

99669798 is an abundant number, since it is smaller than the sum of its proper divisors (128840922).

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

99669798 is a wasteful number, since it uses less digits than its factorization.

99669798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 452 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 63.

The square root of 99669798 is about 9983.4762482815. The cubic root of 99669798 is about 463.6474327021.

The spelling of 99669798 in words is "ninety-nine million, six hundred sixty-nine thousand, seven hundred ninety-eight".