395448997 has 2 divisors, whose sum is σ = 395448998. Its totient is φ = 395448996.

The previous prime is 395448971. The next prime is 395449001. The reversal of 395448997 is 799844593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248409121 + 147039876 = 15761^2 + 12126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395448997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395448797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197724498 + 197724499.

It is an arithmetic number, because the mean of its divisors is an integer number (197724499).

Almost surely, 2^395448997 is an apocalyptic number.

It is an amenable number.

395448997 is a deficient number, since it is larger than the sum of its proper divisors (1).

395448997 is an equidigital number, since it uses as much as digits as its factorization.

395448997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 58.

The square root of 395448997 is about 19885.8994516215. The cubic root of 395448997 is about 734.0012949562.

The spelling of 395448997 in words is "three hundred ninety-five million, four hundred forty-eight thousand, nine hundred ninety-seven".