395241389 has 2 divisors, whose sum is σ = 395241390. Its totient is φ = 395241388.

The previous prime is 395241383. The next prime is 395241403. The reversal of 395241389 is 983142593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325802500 + 69438889 = 18050^2 + 8333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395241389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395241383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197620694 + 197620695.

It is an arithmetic number, because the mean of its divisors is an integer number (197620695).

Almost surely, 2^395241389 is an apocalyptic number.

It is an amenable number.

395241389 is a deficient number, since it is larger than the sum of its proper divisors (1).

395241389 is an equidigital number, since it uses as much as digits as its factorization.

395241389 is an odious number, because the sum of its binary digits is odd.

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

The square root of 395241389 is about 19880.6787861984. The cubic root of 395241389 is about 733.8728239299.

The spelling of 395241389 in words is "three hundred ninety-five million, two hundred forty-one thousand, three hundred eighty-nine".