397849824377 has 2 divisors, whose sum is σ = 397849824378. Its totient is φ = 397849824376.

The previous prime is 397849824353. The next prime is 397849824397. The reversal of 397849824377 is 773428948793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234119531881 + 163730292496 = 483859^2 + 404636^2 .

It is a cyclic number.

It is not a de Polignac number, because 397849824377 - 2¹⁶ = 397849758841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397849824377.

It is not a weakly prime, because it can be changed into another prime (397849824347) 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, 198924912188 + 198924912189.

It is an arithmetic number, because the mean of its divisors is an integer number (198924912189).

Almost surely, 2^397849824377 is an apocalyptic number.

It is an amenable number.

397849824377 is a deficient number, since it is larger than the sum of its proper divisors (1).

397849824377 is an equidigital number, since it uses as much as digits as its factorization.

397849824377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512096256, while the sum is 71.

The spelling of 397849824377 in words is "three hundred ninety-seven billion, eight hundred forty-nine million, eight hundred twenty-four thousand, three hundred seventy-seven".