395267869 has 2 divisors, whose sum is σ = 395267870. Its totient is φ = 395267868.

The previous prime is 395267837. The next prime is 395267897. The reversal of 395267869 is 968762593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236759769 + 158508100 = 15387^2 + 12590^2 .

It is an emirp because it is prime and its reverse (968762593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395267869 - 2⁵ = 395267837 is a prime.

It is a super-2 number, since 2×395267869² = 312473376527602322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395267819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197633934 + 197633935.

It is an arithmetic number, because the mean of its divisors is an integer number (197633935).

Almost surely, 2^395267869 is an apocalyptic number.

It is an amenable number.

395267869 is a deficient number, since it is larger than the sum of its proper divisors (1).

395267869 is an equidigital number, since it uses as much as digits as its factorization.

395267869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 55.

The square root of 395267869 is about 19881.3447482810. The cubic root of 395267869 is about 733.8892126642.

The spelling of 395267869 in words is "three hundred ninety-five million, two hundred sixty-seven thousand, eight hundred sixty-nine".