11856859 has 8 divisors (see below), whose sum is σ = 13579488. Its totient is φ = 10141440.

The previous prime is 11856857. The next prime is 11856877. The reversal of 11856859 is 95865811.

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 11856859 - 2¹ = 11856857 is a prime.

It is a super-3 number, since 3×11856859³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11856857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2379 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (1697436).

Almost surely, 2^11856859 is an apocalyptic number.

11856859 is a deficient number, since it is larger than the sum of its proper divisors (1722629).

11856859 is an equidigital number, since it uses as much as digits as its factorization.

11856859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605.

The product of its digits is 86400, while the sum is 43.

The square root of 11856859 is about 3443.3790090549. The cubic root of 11856859 is about 228.0288962555.

The spelling of 11856859 in words is "eleven million, eight hundred fifty-six thousand, eight hundred fifty-nine".