395256847 has 2 divisors, whose sum is σ = 395256848. Its totient is φ = 395256846.

The previous prime is 395256811. The next prime is 395256857. The reversal of 395256847 is 748652593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 395256847 - 2¹⁵ = 395224079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395256847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395256857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197628423 + 197628424.

It is an arithmetic number, because the mean of its divisors is an integer number (197628424).

Almost surely, 2^395256847 is an apocalyptic number.

395256847 is a deficient number, since it is larger than the sum of its proper divisors (1).

395256847 is an equidigital number, since it uses as much as digits as its factorization.

395256847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The square root of 395256847 is about 19881.0675518192. The cubic root of 395256847 is about 733.8823911281.

The spelling of 395256847 in words is "three hundred ninety-five million, two hundred fifty-six thousand, eight hundred forty-seven".