395366549 has 2 divisors, whose sum is σ = 395366550. Its totient is φ = 395366548.

The previous prime is 395366537. The next prime is 395366593. The reversal of 395366549 is 945663593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371795524 + 23571025 = 19282^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 395366549 - 2¹² = 395362453 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 395366497 and 395366506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395366149) 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, 197683274 + 197683275.

It is an arithmetic number, because the mean of its divisors is an integer number (197683275).

Almost surely, 2^395366549 is an apocalyptic number.

It is an amenable number.

395366549 is a deficient number, since it is larger than the sum of its proper divisors (1).

395366549 is an equidigital number, since it uses as much as digits as its factorization.

395366549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2624400, while the sum is 50.

The square root of 395366549 is about 19883.8263168838. The cubic root of 395366549 is about 733.9502802485.

The spelling of 395366549 in words is "three hundred ninety-five million, three hundred sixty-six thousand, five hundred forty-nine".