11858689 has 4 divisors (see below), whose sum is σ = 11902720. Its totient is φ = 11814660.

The previous prime is 11858683. The next prime is 11858701. The reversal of 11858689 is 98685811.

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 a cyclic number.

It is not a de Polignac number, because 11858689 - 2⁵ = 11858657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11858683) 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 3 ways as a sum of consecutive naturals, for example, 21609 + ... + 22150.

It is an arithmetic number, because the mean of its divisors is an integer number (2975680).

Almost surely, 2^11858689 is an apocalyptic number.

It is an amenable number.

11858689 is a deficient number, since it is larger than the sum of its proper divisors (44031).

11858689 is an equidigital number, since it uses as much as digits as its factorization.

11858689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44030.

The product of its digits is 138240, while the sum is 46.

The square root of 11858689 is about 3443.6447261586. The cubic root of 11858689 is about 228.0406270580.

The spelling of 11858689 in words is "eleven million, eight hundred fifty-eight thousand, six hundred eighty-nine".