8601139 has 4 divisors (see below), whose sum is σ = 8897760. Its totient is φ = 8304520.

The previous prime is 8601121. The next prime is 8601143. The reversal of 8601139 is 9311068.

It is a happy number.

8601139 is digitally balanced in base 2, 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 8601139 - 2⁵ = 8601107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8601169) 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, 148267 + ... + 148324.

It is an arithmetic number, because the mean of its divisors is an integer number (2224440).

Almost surely, 2^8601139 is an apocalyptic number.

8601139 is a deficient number, since it is larger than the sum of its proper divisors (296621).

8601139 is a wasteful number, since it uses less digits than its factorization.

8601139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296620.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 8601139 is about 2932.7698511816. The cubic root of 8601139 is about 204.8890059470.

The spelling of 8601139 in words is "eight million, six hundred one thousand, one hundred thirty-nine".