395412199880549 has 2 divisors, whose sum is σ = 395412199880550. Its totient is φ = 395412199880548.

The previous prime is 395412199880513. The next prime is 395412199880557. The reversal of 395412199880549 is 945088991214593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391094843149924 + 4317356730625 = 19776118^2 + 2077825^2 .

It is a cyclic number.

It is not a de Polignac number, because 395412199880549 - 2²⁰ = 395412198831973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395412199880549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395412199180549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197706099940274 + 197706099940275.

It is an arithmetic number, because the mean of its divisors is an integer number (197706099940275).

Almost surely, 2^{395412199880549} is an apocalyptic number.

It is an amenable number.

395412199880549 is a deficient number, since it is larger than the sum of its proper divisors (1).

395412199880549 is an equidigital number, since it uses as much as digits as its factorization.

395412199880549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1007769600, while the sum is 77.

The spelling of 395412199880549 in words is "three hundred ninety-five trillion, four hundred twelve billion, one hundred ninety-nine million, eight hundred eighty thousand, five hundred forty-nine".