395448680269 has 2 divisors, whose sum is σ = 395448680270. Its totient is φ = 395448680268.

The previous prime is 395448680261. The next prime is 395448680299. The reversal of 395448680269 is 962086844593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378640854244 + 16807826025 = 615338^2 + 129645^2 .

It is a cyclic number.

It is not a de Polignac number, because 395448680269 - 2³ = 395448680261 is a prime.

It is a super-2 number, since 2×395448680269² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 395448680269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395448680261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197724340134 + 197724340135.

It is an arithmetic number, because the mean of its divisors is an integer number (197724340135).

Almost surely, 2^395448680269 is an apocalyptic number.

It is an amenable number.

395448680269 is a deficient number, since it is larger than the sum of its proper divisors (1).

395448680269 is an equidigital number, since it uses as much as digits as its factorization.

395448680269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89579520, while the sum is 64.

The spelling of 395448680269 in words is "three hundred ninety-five billion, four hundred forty-eight million, six hundred eighty thousand, two hundred sixty-nine".