395445913 has 2 divisors, whose sum is σ = 395445914. Its totient is φ = 395445912.

The previous prime is 395445887. The next prime is 395445937. The reversal of 395445913 is 319544593.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373571584 + 21874329 = 19328^2 + 4677^2 .

It is an emirp because it is prime and its reverse (319544593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395445913 - 2¹⁷ = 395314841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395445913.

It is not a weakly prime, because it can be changed into another prime (395485913) 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, 197722956 + 197722957.

It is an arithmetic number, because the mean of its divisors is an integer number (197722957).

Almost surely, 2^395445913 is an apocalyptic number.

It is an amenable number.

395445913 is a deficient number, since it is larger than the sum of its proper divisors (1).

395445913 is an equidigital number, since it uses as much as digits as its factorization.

395445913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 43.

The square root of 395445913 is about 19885.8219090889. The cubic root of 395445913 is about 733.9993868586. Note that the first 3 decimals are identical.

The spelling of 395445913 in words is "three hundred ninety-five million, four hundred forty-five thousand, nine hundred thirteen".