395737669 has 2 divisors, whose sum is σ = 395737670. Its totient is φ = 395737668.

The previous prime is 395737631. The next prime is 395737687. The reversal of 395737669 is 966737593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 359557444 + 36180225 = 18962^2 + 6015^2 .

It is an emirp because it is prime and its reverse (966737593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395737669 - 2⁷ = 395737541 is a prime.

It is a super-2 number, since 2×395737669² = 313216605331107122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395737619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197868834 + 197868835.

It is an arithmetic number, because the mean of its divisors is an integer number (197868835).

Almost surely, 2^395737669 is an apocalyptic number.

It is an amenable number.

395737669 is a deficient number, since it is larger than the sum of its proper divisors (1).

395737669 is an equidigital number, since it uses as much as digits as its factorization.

395737669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6429780, while the sum is 55.

The square root of 395737669 is about 19893.1563357854. The cubic root of 395737669 is about 734.1798549277.

The spelling of 395737669 in words is "three hundred ninety-five million, seven hundred thirty-seven thousand, six hundred sixty-nine".