395878499 has 2 divisors, whose sum is σ = 395878500. Its totient is φ = 395878498.

The previous prime is 395878481. The next prime is 395878513. The reversal of 395878499 is 994878593.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395878499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (395878459) 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, 197939249 + 197939250.

It is an arithmetic number, because the mean of its divisors is an integer number (197939250).

Almost surely, 2^395878499 is an apocalyptic number.

395878499 is a deficient number, since it is larger than the sum of its proper divisors (1).

395878499 is an equidigital number, since it uses as much as digits as its factorization.

395878499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 62.

The square root of 395878499 is about 19896.6956804390. The cubic root of 395878499 is about 734.2669347406.

The spelling of 395878499 in words is "three hundred ninety-five million, eight hundred seventy-eight thousand, four hundred ninety-nine".