396144517 has 2 divisors, whose sum is σ = 396144518. Its totient is φ = 396144516.

The previous prime is 396144487. The next prime is 396144521. The reversal of 396144517 is 715441693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355171716 + 40972801 = 18846^2 + 6401^2 .

It is an emirp because it is prime and its reverse (715441693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396144517 - 2⁷ = 396144389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396144517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396144587) 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, 198072258 + 198072259.

It is an arithmetic number, because the mean of its divisors is an integer number (198072259).

Almost surely, 2^396144517 is an apocalyptic number.

It is an amenable number.

396144517 is a deficient number, since it is larger than the sum of its proper divisors (1).

396144517 is an equidigital number, since it uses as much as digits as its factorization.

396144517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 396144517 is about 19903.3795371540. The cubic root of 396144517 is about 734.4313660723.

The spelling of 396144517 in words is "three hundred ninety-six million, one hundred forty-four thousand, five hundred seventeen".