397360177 has 2 divisors, whose sum is σ = 397360178. Its totient is φ = 397360176.

The previous prime is 397360163. The next prime is 397360207. The reversal of 397360177 is 771063793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255488256 + 141871921 = 15984^2 + 11911^2 .

It is an emirp because it is prime and its reverse (771063793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397360177 - 2¹⁹ = 396835889 is a prime.

It is a super-2 number, since 2×397360177² = 315790220530942658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397360127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198680088 + 198680089.

It is an arithmetic number, because the mean of its divisors is an integer number (198680089).

Almost surely, 2^397360177 is an apocalyptic number.

It is an amenable number.

397360177 is a deficient number, since it is larger than the sum of its proper divisors (1).

397360177 is an equidigital number, since it uses as much as digits as its factorization.

397360177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 166698, while the sum is 43.

The square root of 397360177 is about 19933.8951788154. The cubic root of 397360177 is about 735.1818557523.

The spelling of 397360177 in words is "three hundred ninety-seven million, three hundred sixty thousand, one hundred seventy-seven".