394636147 has 12 divisors (see below), whose sum is σ = 433680480. Its totient is φ = 358606976.

The previous prime is 394636141. The next prime is 394636159. The reversal of 394636147 is 741636493.

It is not a de Polignac number, because 394636147 - 2⁷ = 394636019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394636141) 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 11 ways as a sum of consecutive naturals, for example, 15163 + ... + 31924.

It is an arithmetic number, because the mean of its divisors is an integer number (36140040).

Almost surely, 2^394636147 is an apocalyptic number.

394636147 is a deficient number, since it is larger than the sum of its proper divisors (39044333).

394636147 is a wasteful number, since it uses less digits than its factorization.

394636147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47150 (or 47133 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 394636147 is about 19865.4510897689. The cubic root of 394636147 is about 733.4980339205.

The spelling of 394636147 in words is "three hundred ninety-four million, six hundred thirty-six thousand, one hundred forty-seven".