395309072 has 20 divisors (see below), whose sum is σ = 766228860. Its totient is φ = 197572608.

The previous prime is 395309059. The next prime is 395309077. The reversal of 395309072 is 270903593.

It can be written as a sum of positive squares in 2 ways, for example, as 235438336 + 159870736 = 15344^2 + 12644^2 .

It is not an unprimeable number, because it can be changed into a prime (395309077) 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, 59048 + ... + 65400.

It is an arithmetic number, because the mean of its divisors is an integer number (38311443).

Almost surely, 2^395309072 is an apocalyptic number.

It is an amenable number.

395309072 is a deficient number, since it is larger than the sum of its proper divisors (370919788).

395309072 is a wasteful number, since it uses less digits than its factorization.

395309072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250 (or 10244 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 395309072 is about 19882.3809439413. The cubic root of 395309072 is about 733.9147121537.

The spelling of 395309072 in words is "three hundred ninety-five million, three hundred nine thousand, seventy-two".