395448013 has 2 divisors, whose sum is σ = 395448014. Its totient is φ = 395448012.

The previous prime is 395447959. The next prime is 395448029. The reversal of 395448013 is 310844593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374306409 + 21141604 = 19347^2 + 4598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395448013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395448073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197724006 + 197724007.

It is an arithmetic number, because the mean of its divisors is an integer number (197724007).

Almost surely, 2^395448013 is an apocalyptic number.

It is an amenable number.

395448013 is a deficient number, since it is larger than the sum of its proper divisors (1).

395448013 is an equidigital number, since it uses as much as digits as its factorization.

395448013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 395448013 is about 19885.8747104572. The cubic root of 395448013 is about 734.0006861479. Note that the first 3 decimals are identical.

The spelling of 395448013 in words is "three hundred ninety-five million, four hundred forty-eight thousand, thirteen".