99960000 has 420 divisors, whose sum is σ = 407063448. Its totient is φ = 21504000.

The previous prime is 99959999. The next prime is 99960011. The reversal of 99960000 is 6999.

It is a tau number, because it is divible by the number of its divisors (420).

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5879992 + ... + 5880008.

Almost surely, 2^99960000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203531724).

99960000 is an abundant number, since it is smaller than the sum of its proper divisors (307103448).

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

99960000 is a wasteful number, since it uses less digits than its factorization.

99960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 99960000 is about 9997.9997999600. Note that the first 3 decimals coincide. The cubic root of 99960000 is about 464.0969872566.

Adding to 99960000 its reverse (6999), we get a palindrome (99966999).

The spelling of 99960000 in words is "ninety-nine million, nine hundred sixty thousand".