395944091 has 2 divisors, whose sum is σ = 395944092. Its totient is φ = 395944090.

The previous prime is 395944063. The next prime is 395944099. The reversal of 395944091 is 190449593.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395944091 is a prime.

It is not a weakly prime, because it can be changed into another prime (395944099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197972045 + 197972046.

It is an arithmetic number, because the mean of its divisors is an integer number (197972046).

Almost surely, 2^395944091 is an apocalyptic number.

395944091 is a deficient number, since it is larger than the sum of its proper divisors (1).

395944091 is an equidigital number, since it uses as much as digits as its factorization.

395944091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 395944091 is about 19898.3439260658. The cubic root of 395944091 is about 734.3074853786.

The spelling of 395944091 in words is "three hundred ninety-five million, nine hundred forty-four thousand, ninety-one".