102799 has 4 divisors (see below), whose sum is σ = 108864. Its totient is φ = 96736.

The previous prime is 102797. The next prime is 102811. The reversal of 102799 is 997201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102799 - 2¹ = 102797 is a prime.

It is a Duffinian number.

102799 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102793) 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, 3007 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (27216).

2¹⁰²⁷⁹⁹ is an apocalyptic number.

102799 is a deficient number, since it is larger than the sum of its proper divisors (6065).

102799 is an equidigital number, since it uses as much as digits as its factorization.

102799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 102799 is about 320.6228313767. The cubic root of 102799 is about 46.8449698025.

It can be divided in two parts, 10 and 2799, that added together give a square (2809 = 53²).

The spelling of 102799 in words is "one hundred two thousand, seven hundred ninety-nine".