396808177 has 2 divisors, whose sum is σ = 396808178. Its totient is φ = 396808176.

The previous prime is 396808151. The next prime is 396808211. The reversal of 396808177 is 771808693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396766561 + 41616 = 19919^2 + 204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396808177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396808177.

It is not a weakly prime, because it can be changed into another prime (396808117) 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, 198404088 + 198404089.

It is an arithmetic number, because the mean of its divisors is an integer number (198404089).

Almost surely, 2^396808177 is an apocalyptic number.

It is an amenable number.

396808177 is a deficient number, since it is larger than the sum of its proper divisors (1).

396808177 is an equidigital number, since it uses as much as digits as its factorization.

396808177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 396808177 is about 19920.0446033637. The cubic root of 396808177 is about 734.8412676489.

The spelling of 396808177 in words is "three hundred ninety-six million, eight hundred eight thousand, one hundred seventy-seven".