99723 has 8 divisors (see below), whose sum is σ = 143248. Its totient is φ = 61344.

The previous prime is 99721. The next prime is 99733. The reversal of 99723 is 32799.

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

It is not a de Polignac number, because 99723 - 2¹ = 99721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99721) 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, 1240 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (17906).

2⁹⁹⁷²³ is an apocalyptic number.

99723 is a deficient number, since it is larger than the sum of its proper divisors (43525).

99723 is a wasteful number, since it uses less digits than its factorization.

99723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573.

The product of its digits is 3402, while the sum is 30.

The square root of 99723 is about 315.7894868421. The cubic root of 99723 is about 46.3729913666.

The spelling of 99723 in words is "ninety-nine thousand, seven hundred twenty-three".