11689873 has 4 divisors (see below), whose sum is σ = 12589108. Its totient is φ = 10790640.

The previous prime is 11689859. The next prime is 11689889. The reversal of 11689873 is 37898611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4028049 + 7661824 = 2007^2 + 2768^2 .

It is a cyclic number.

It is not a de Polignac number, because 11689873 - 2²¹ = 9592721 is a prime.

It is a super-2 number, since 2×11689873² = 273306261512258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11689273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449598 + ... + 449623.

It is an arithmetic number, because the mean of its divisors is an integer number (3147277).

Almost surely, 2^11689873 is an apocalyptic number.

11689873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11689873 is a deficient number, since it is larger than the sum of its proper divisors (899235).

11689873 is an equidigital number, since it uses as much as digits as its factorization.

11689873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899234.

The product of its digits is 72576, while the sum is 43.

The square root of 11689873 is about 3419.0456270720. The cubic root of 11689873 is about 226.9533500106.

The spelling of 11689873 in words is "eleven million, six hundred eighty-nine thousand, eight hundred seventy-three".