395473817 has 2 divisors, whose sum is σ = 395473818. Its totient is φ = 395473816.

The previous prime is 395473807. The next prime is 395473849. The reversal of 395473817 is 718374593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384787456 + 10686361 = 19616^2 + 3269^2 .

It is a cyclic number.

It is not a de Polignac number, because 395473817 - 2⁴ = 395473801 is a prime.

It is not a weakly prime, because it can be changed into another prime (395473807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197736908 + 197736909.

It is an arithmetic number, because the mean of its divisors is an integer number (197736909).

Almost surely, 2^395473817 is an apocalyptic number.

It is an amenable number.

395473817 is a deficient number, since it is larger than the sum of its proper divisors (1).

395473817 is an equidigital number, since it uses as much as digits as its factorization.

395473817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 395473817 is about 19886.5235021107. The cubic root of 395473817 is about 734.0166509449.

The spelling of 395473817 in words is "three hundred ninety-five million, four hundred seventy-three thousand, eight hundred seventeen".