395120837 has 2 divisors, whose sum is σ = 395120838. Its totient is φ = 395120836.

The previous prime is 395120819. The next prime is 395120849. The reversal of 395120837 is 738021593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394856641 + 264196 = 19871^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 395120837 - 2⁶ = 395120773 is a prime.

It is a super-2 number, since 2×395120837² = 312240951663161138, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395120837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395120807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197560418 + 197560419.

It is an arithmetic number, because the mean of its divisors is an integer number (197560419).

Almost surely, 2^395120837 is an apocalyptic number.

It is an amenable number.

395120837 is a deficient number, since it is larger than the sum of its proper divisors (1).

395120837 is an equidigital number, since it uses as much as digits as its factorization.

395120837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 395120837 is about 19877.6466665448. The cubic root of 395120837 is about 733.7982038493.

The spelling of 395120837 in words is "three hundred ninety-five million, one hundred twenty thousand, eight hundred thirty-seven".