8135389247 has 8 divisors (see below), whose sum is σ = 8192436000. Its totient is φ = 8078504544.

The previous prime is 8135389181. The next prime is 8135389313. The reversal of 8135389247 is 7429835318.

It is an interprime number because it is at equal distance from previous prime (8135389181) and next prime (8135389313).

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 8135389247 - 2¹² = 8135385151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8135389195 and 8135389204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8135389747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61133 + ... + 141449.

It is an arithmetic number, because the mean of its divisors is an integer number (1024054500).

Almost surely, 2^8135389247 is an apocalyptic number.

8135389247 is a deficient number, since it is larger than the sum of its proper divisors (57046753).

8135389247 is a wasteful number, since it uses less digits than its factorization.

8135389247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81025.

The product of its digits is 1451520, while the sum is 50.

The square root of 8135389247 is about 90196.3926495955. The cubic root of 8135389247 is about 2011.2193822943.

The spelling of 8135389247 in words is "eight billion, one hundred thirty-five million, three hundred eighty-nine thousand, two hundred forty-seven".