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99993 = 333331
BaseRepresentation
bin11000011010011001
312002011110
4120122121
511144433
62050533
7564345
oct303231
9162143
1099993
1169143
1249a49
133668a
1428625
151e963
hex18699

99993 has 4 divisors (see below), whose sum is σ = 133328. Its totient is φ = 66660.

The previous prime is 99991. The next prime is 100003. The reversal of 99993 is 39999.

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.

It is not a de Polignac number, because 99993 - 21 = 99991 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (99991) 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, 16663 + ... + 16668.

It is an arithmetic number, because the mean of its divisors is an integer number (33332).

299993 is an apocalyptic number.

It is an amenable number.

99993 is a deficient number, since it is larger than the sum of its proper divisors (33335).

99993 is a wasteful number, since it uses less digits than its factorization.

99993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33334.

The product of its digits is 19683, while the sum is 39.

The square root of 99993 is about 316.2166978513. The cubic root of 99993 is about 46.4148052735.

The spelling of 99993 in words is "ninety-nine thousand, nine hundred ninety-three".

Divisors: 1 3 33331 99993