109873 has 2 divisors, whose sum is σ = 109874. Its totient is φ = 109872.

The previous prime is 109859. The next prime is 109883. The reversal of 109873 is 378901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74529 + 35344 = 273^2 + 188^2 .

It is an emirp because it is prime and its reverse (378901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109873 - 2⁵ = 109841 is a prime.

It is a super-2 number, since 2×109873² = 24144152258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54936 + 54937.

It is an arithmetic number, because the mean of its divisors is an integer number (54937).

2¹⁰⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

109873 is a deficient number, since it is larger than the sum of its proper divisors (1).

109873 is an equidigital number, since it uses as much as digits as its factorization.

109873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 109873 is about 331.4709640376. The cubic root of 109873 is about 47.8957517629.

Adding to 109873 its sum of digits (28), we get a palindrome (109901).

The spelling of 109873 in words is "one hundred nine thousand, eight hundred seventy-three".