8147385 has 20 divisors (see below), whose sum is σ = 14605668. Its totient is φ = 4345056.

The previous prime is 8147357. The next prime is 8147387. The reversal of 8147385 is 5837418.

It can be written as a sum of positive squares in 2 ways, for example, as 2286144 + 5861241 = 1512^2 + 2421^2 .

It is not a de Polignac number, because 8147385 - 2¹¹ = 8145337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8147387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9654 + ... + 10463.

Almost surely, 2^8147385 is an apocalyptic number.

It is an amenable number.

8147385 is a deficient number, since it is larger than the sum of its proper divisors (6458283).

8147385 is a wasteful number, since it uses less digits than its factorization.

8147385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20134 (or 20125 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 8147385 is about 2854.3624507059. The cubic root of 8147385 is about 201.2207421171.

The spelling of 8147385 in words is "eight million, one hundred forty-seven thousand, three hundred eighty-five".