99321800 has 24 divisors (see below), whose sum is σ = 230923650. Its totient is φ = 39728640.

The previous prime is 99321793. The next prime is 99321809. The reversal of 99321800 is 812399.

It can be written as a sum of positive squares in 3 ways, for example, as 76492516 + 22829284 = 8746^2 + 4778^2 .

It is not an unprimeable number, because it can be changed into a prime (99321809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248105 + ... + 248504.

Almost surely, 2^99321800 is an apocalyptic number.

It is an amenable number.

99321800 is an abundant number, since it is smaller than the sum of its proper divisors (131601850).

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

99321800 is a wasteful number, since it uses less digits than its factorization.

99321800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496625 (or 496616 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 99321800 is about 9966.0323098011. The cubic root of 99321800 is about 463.1071937305.

The spelling of 99321800 in words is "ninety-nine million, three hundred twenty-one thousand, eight hundred".