395995847 has 4 divisors (see below), whose sum is σ = 426457080. Its totient is φ = 365534616.

The previous prime is 395995843. The next prime is 395995861. The reversal of 395995847 is 748599593.

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 395995847 - 2² = 395995843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395995843) 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, 15230597 + ... + 15230622.

It is an arithmetic number, because the mean of its divisors is an integer number (106614270).

Almost surely, 2^395995847 is an apocalyptic number.

395995847 is a deficient number, since it is larger than the sum of its proper divisors (30461233).

395995847 is a wasteful number, since it uses less digits than its factorization.

395995847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30461232.

The product of its digits is 12247200, while the sum is 59.

The square root of 395995847 is about 19899.6443938076. The cubic root of 395995847 is about 734.3394790895.

The spelling of 395995847 in words is "three hundred ninety-five million, nine hundred ninety-five thousand, eight hundred forty-seven".