99321380 has 24 divisors (see below), whose sum is σ = 210644280. Its totient is φ = 39334400.

The previous prime is 99321377. The next prime is 99321389. The reversal of 99321380 is 8312399.

It can be written as a sum of positive squares in 4 ways, for example, as 42198016 + 57123364 = 6496^2 + 7558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99321380.

It is not an unprimeable number, because it can be changed into a prime (99321389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22565 + ... + 26604.

It is an arithmetic number, because the mean of its divisors is an integer number (8776845).

Almost surely, 2^99321380 is an apocalyptic number.

It is an amenable number.

99321380 is an abundant number, since it is smaller than the sum of its proper divisors (111322900).

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

99321380 is a wasteful number, since it uses less digits than its factorization.

99321380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49279 (or 49277 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 99321380 is about 9966.0112382036. The cubic root of 99321380 is about 463.1065409524.

The spelling of 99321380 in words is "ninety-nine million, three hundred twenty-one thousand, three hundred eighty".