395486009 has 2 divisors, whose sum is σ = 395486010. Its totient is φ = 395486008.

The previous prime is 395485913. The next prime is 395486023. The reversal of 395486009 is 900684593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376476409 + 19009600 = 19403^2 + 4360^2 .

It is an emirp because it is prime and its reverse (900684593) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395486009 is a prime.

It is not a weakly prime, because it can be changed into another prime (395486309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197743004 + 197743005.

It is an arithmetic number, because the mean of its divisors is an integer number (197743005).

Almost surely, 2^395486009 is an apocalyptic number.

It is an amenable number.

395486009 is a deficient number, since it is larger than the sum of its proper divisors (1).

395486009 is an equidigital number, since it uses as much as digits as its factorization.

395486009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 395486009 is about 19886.8300389982. The cubic root of 395486009 is about 734.0241938287.

The spelling of 395486009 in words is "three hundred ninety-five million, four hundred eighty-six thousand, nine".