11859213 has 4 divisors (see below), whose sum is σ = 15812288. Its totient is φ = 7906140.

The previous prime is 11859187. The next prime is 11859233. The reversal of 11859213 is 31295811.

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 not a de Polignac number, because 11859213 - 2⁹ = 11858701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11859233) 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, 1976533 + ... + 1976538.

It is an arithmetic number, because the mean of its divisors is an integer number (3953072).

Almost surely, 2^11859213 is an apocalyptic number.

It is an amenable number.

11859213 is a deficient number, since it is larger than the sum of its proper divisors (3953075).

11859213 is an equidigital number, since it uses as much as digits as its factorization.

11859213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953074.

The product of its digits is 2160, while the sum is 30.

The square root of 11859213 is about 3443.7208074988. The cubic root of 11859213 is about 228.0439858196.

The spelling of 11859213 in words is "eleven million, eight hundred fifty-nine thousand, two hundred thirteen".