11609859 has 8 divisors (see below), whose sum is σ = 15558400. Its totient is φ = 7700616.

The previous prime is 11609839. The next prime is 11609863. The reversal of 11609859 is 95890611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11609859 - 2¹⁷ = 11478787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11609839) 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, 9127 + ... + 10320.

It is an arithmetic number, because the mean of its divisors is an integer number (1944800).

Almost surely, 2^11609859 is an apocalyptic number.

11609859 is a deficient number, since it is larger than the sum of its proper divisors (3948541).

11609859 is a wasteful number, since it uses less digits than its factorization.

11609859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19649.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 11609859 is about 3407.3243168210. The cubic root of 11609859 is about 226.4343527619.

The spelling of 11609859 in words is "eleven million, six hundred nine thousand, eight hundred fifty-nine".