395800397 has 2 divisors, whose sum is σ = 395800398. Its totient is φ = 395800396.

The previous prime is 395800369. The next prime is 395800403. The reversal of 395800397 is 793008593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387853636 + 7946761 = 19694^2 + 2819^2 .

It is a cyclic number.

It is not a de Polignac number, because 395800397 - 2¹⁶ = 395734861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395800697) 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, 197900198 + 197900199.

It is an arithmetic number, because the mean of its divisors is an integer number (197900199).

Almost surely, 2^395800397 is an apocalyptic number.

It is an amenable number.

395800397 is a deficient number, since it is larger than the sum of its proper divisors (1).

395800397 is an equidigital number, since it uses as much as digits as its factorization.

395800397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 395800397 is about 19894.7328959200. The cubic root of 395800397 is about 734.2186442609.

The spelling of 395800397 in words is "three hundred ninety-five million, eight hundred thousand, three hundred ninety-seven".