99830 has 16 divisors (see below), whose sum is σ = 183600. Its totient is φ = 39072.

The previous prime is 99829. The next prime is 99833. The reversal of 99830 is 3899.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99793 and 99802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (11475).

2⁹⁹⁸³⁰ is an apocalyptic number.

99830 is a deficient number, since it is larger than the sum of its proper divisors (83770).

99830 is a wasteful number, since it uses less digits than its factorization.

99830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 99830 is about 315.9588580812. The cubic root of 99830 is about 46.3895710807.

It can be divided in two parts, 99 and 830, that added together give a palindrome (929).

The spelling of 99830 in words is "ninety-nine thousand, eight hundred thirty".