395999047 has 2 divisors, whose sum is σ = 395999048. Its totient is φ = 395999046.

The previous prime is 395999041. The next prime is 395999063. The reversal of 395999047 is 740999593.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 395999047 - 2¹¹ = 395996999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395999041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197999523 + 197999524.

It is an arithmetic number, because the mean of its divisors is an integer number (197999524).

Almost surely, 2^395999047 is an apocalyptic number.

395999047 is a deficient number, since it is larger than the sum of its proper divisors (1).

395999047 is an equidigital number, since it uses as much as digits as its factorization.

395999047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2755620, while the sum is 55.

The square root of 395999047 is about 19899.7247970920. The cubic root of 395999047 is about 734.3414571237.

The spelling of 395999047 in words is "three hundred ninety-five million, nine hundred ninety-nine thousand, forty-seven".