99730 has 8 divisors (see below), whose sum is σ = 179532. Its totient is φ = 39888.

The previous prime is 99721. The next prime is 99733. The reversal of 99730 is 3799.

It can be written as a sum of positive squares in 2 ways, for example, as 91809 + 7921 = 303^2 + 89^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4977 + ... + 4996.

2⁹⁹⁷³⁰ is an apocalyptic number.

99730 is a deficient number, since it is larger than the sum of its proper divisors (79802).

99730 is a wasteful number, since it uses less digits than its factorization.

99730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 99730 is about 315.8005699805. The cubic root of 99730 is about 46.3740763833.

The spelling of 99730 in words is "ninety-nine thousand, seven hundred thirty".