11508139 has 4 divisors (see below), whose sum is σ = 11522056. Its totient is φ = 11494224.

The previous prime is 11508109. The next prime is 11508143. The reversal of 11508139 is 93180511.

11508139 is digitally balanced in base 3, because in such base 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 11508139 - 2¹⁵ = 11475371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11508109) 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, 5634 + ... + 7399.

It is an arithmetic number, because the mean of its divisors is an integer number (2880514).

Almost surely, 2^11508139 is an apocalyptic number.

11508139 is a deficient number, since it is larger than the sum of its proper divisors (13917).

11508139 is an equidigital number, since it uses as much as digits as its factorization.

11508139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13916.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 11508139 is about 3392.3648093918. The cubic root of 11508139 is about 225.7711090064.

The spelling of 11508139 in words is "eleven million, five hundred eight thousand, one hundred thirty-nine".