103899 has 8 divisors (see below), whose sum is σ = 141120. Its totient is φ = 67976.

The previous prime is 103889. The next prime is 103903. The reversal of 103899 is 998301.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 103899 - 2⁵ = 103867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117 + ... + 470.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2¹⁰³⁸⁹⁹ is an apocalyptic number.

103899 is a deficient number, since it is larger than the sum of its proper divisors (37221).

103899 is an equidigital number, since it uses as much as digits as its factorization.

103899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 103899 is about 322.3336780419. Note that the first 3 decimals coincide. The cubic root of 103899 is about 47.0114654388.

The spelling of 103899 in words is "one hundred three thousand, eight hundred ninety-nine".