11585139 has 4 divisors (see below), whose sum is σ = 15446856. Its totient is φ = 7723424.

The previous prime is 11585129. The next prime is 11585153. The reversal of 11585139 is 93158511.

11585139 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11585139 - 2⁸ = 11584883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11585129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1930854 + ... + 1930859.

It is an arithmetic number, because the mean of its divisors is an integer number (3861714).

Almost surely, 2^11585139 is an apocalyptic number.

11585139 is a deficient number, since it is larger than the sum of its proper divisors (3861717).

11585139 is an equidigital number, since it uses as much as digits as its factorization.

11585139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861716.

The product of its digits is 5400, while the sum is 33.

The square root of 11585139 is about 3403.6949040712. The cubic root of 11585139 is about 226.2735286826.

The spelling of 11585139 in words is "eleven million, five hundred eighty-five thousand, one hundred thirty-nine".