395857471 has 4 divisors (see below), whose sum is σ = 396442872. Its totient is φ = 395272072.

The previous prime is 395857403. The next prime is 395857499. The reversal of 395857471 is 174758593.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 395857471 - 2¹⁵ = 395824703 is a prime.

It is a super-3 number, since 3×395857471³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395857771) 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 3 ways as a sum of consecutive naturals, for example, 291685 + ... + 293038.

It is an arithmetic number, because the mean of its divisors is an integer number (99110718).

Almost surely, 2^395857471 is an apocalyptic number.

395857471 is a deficient number, since it is larger than the sum of its proper divisors (585401).

395857471 is an equidigital number, since it uses as much as digits as its factorization.

395857471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585400.

The product of its digits is 1058400, while the sum is 49.

The square root of 395857471 is about 19896.1672439694. The cubic root of 395857471 is about 734.2539337495.

The spelling of 395857471 in words is "three hundred ninety-five million, eight hundred fifty-seven thousand, four hundred seventy-one".