147639385 has 4 divisors (see below), whose sum is σ = 177167268. Its totient is φ = 118111504.

The previous prime is 147639353. The next prime is 147639419. The reversal of 147639385 is 583936741.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77933584 + 69705801 = 8828^2 + 8349^2 .

It is a cyclic number.

It is not a de Polignac number, because 147639385 - 2⁵ = 147639353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14763934 + ... + 14763943.

It is an arithmetic number, because the mean of its divisors is an integer number (44291817).

Almost surely, 2^147639385 is an apocalyptic number.

It is an amenable number.

147639385 is a deficient number, since it is larger than the sum of its proper divisors (29527883).

147639385 is an equidigital number, since it uses as much as digits as its factorization.

147639385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29527882.

The product of its digits is 544320, while the sum is 46.

The square root of 147639385 is about 12150.6948360989. The cubic root of 147639385 is about 528.5272809314.

The spelling of 147639385 in words is "one hundred forty-seven million, six hundred thirty-nine thousand, three hundred eighty-five".