Search a number
-
+
395695791397 is a prime number
BaseRepresentation
bin1011100001000010100…
…11101001110100100101
31101211100201102220210101
411300201103221310211
522440341110311042
6501440302024101
740405465505614
oct5604123516445
91354321386711
10395695791397
111428a4a5a805
1264831878031
132b4109a734a
141521a6a187b
15a45dad26b7
hex5c214e9d25

395695791397 has 2 divisors, whose sum is σ = 395695791398. Its totient is φ = 395695791396.

The previous prime is 395695791349. The next prime is 395695791419. The reversal of 395695791397 is 793197596593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201911827716 + 193783963681 = 449346^2 + 440209^2 .

It is an emirp because it is prime and its reverse (793197596593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395695791397 - 227 = 395561573669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395695791317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197847895698 + 197847895699.

It is an arithmetic number, because the mean of its divisors is an integer number (197847895699).

Almost surely, 2395695791397 is an apocalyptic number.

It is an amenable number.

395695791397 is a deficient number, since it is larger than the sum of its proper divisors (1).

395695791397 is an equidigital number, since it uses as much as digits as its factorization.

395695791397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 434010150, while the sum is 73.

The spelling of 395695791397 in words is "three hundred ninety-five billion, six hundred ninety-five million, seven hundred ninety-one thousand, three hundred ninety-seven".