395709889369 has 2 divisors, whose sum is σ = 395709889370. Its totient is φ = 395709889368.

The previous prime is 395709889363. The next prime is 395709889409. The reversal of 395709889369 is 963988907593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382651113744 + 13058775625 = 618588^2 + 114275^2 .

It is a cyclic number.

It is not a de Polignac number, because 395709889369 - 2³³ = 387119954777 is a prime.

It is a super-2 number, since 2×395709889369² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 395709889295 and 395709889304.

It is not a weakly prime, because it can be changed into another prime (395709889363) 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, 197854944684 + 197854944685.

It is an arithmetic number, because the mean of its divisors is an integer number (197854944685).

Almost surely, 2^395709889369 is an apocalyptic number.

It is an amenable number.

395709889369 is a deficient number, since it is larger than the sum of its proper divisors (1).

395709889369 is an equidigital number, since it uses as much as digits as its factorization.

395709889369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793618560, while the sum is 76.

The spelling of 395709889369 in words is "three hundred ninety-five billion, seven hundred nine million, eight hundred eighty-nine thousand, three hundred sixty-nine".