99893 has 4 divisors (see below), whose sum is σ = 100608. Its totient is φ = 99180.

The previous prime is 99881. The next prime is 99901. The reversal of 99893 is 39899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39899 = 17 ⋅2347.

It is a cyclic number.

It is not a de Polignac number, because 99893 - 2⁴ = 99877 is a prime.

It is a super-2 number, since 2×99893² = 19957222898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 452.

It is an arithmetic number, because the mean of its divisors is an integer number (25152).

2⁹⁹⁸⁹³ is an apocalyptic number.

It is an amenable number.

99893 is a deficient number, since it is larger than the sum of its proper divisors (715).

99893 is a wasteful number, since it uses less digits than its factorization.

99893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714.

The product of its digits is 17496, while the sum is 38.

The square root of 99893 is about 316.0585388816. The cubic root of 99893 is about 46.3993274278.

The spelling of 99893 in words is "ninety-nine thousand, eight hundred ninety-three".