396248917 has 2 divisors, whose sum is σ = 396248918. Its totient is φ = 396248916.

The previous prime is 396248849. The next prime is 396248939. The reversal of 396248917 is 719842693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396248836 + 81 = 19906^2 + 9^2 .

It is a cyclic number.

It is not a de Polignac number, because 396248917 - 2¹¹ = 396246869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396248317) 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, 198124458 + 198124459.

It is an arithmetic number, because the mean of its divisors is an integer number (198124459).

Almost surely, 2^396248917 is an apocalyptic number.

It is an amenable number.

396248917 is a deficient number, since it is larger than the sum of its proper divisors (1).

396248917 is an equidigital number, since it uses as much as digits as its factorization.

396248917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 396248917 is about 19906.0020345623. The cubic root of 396248917 is about 734.4958777986.

The spelling of 396248917 in words is "three hundred ninety-six million, two hundred forty-eight thousand, nine hundred seventeen".