499647397 has 2 divisors, whose sum is σ = 499647398. Its totient is φ = 499647396.

The previous prime is 499647383. The next prime is 499647413. The reversal of 499647397 is 793746994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302272996 + 197374401 = 17386^2 + 14049^2 .

It is a cyclic number.

It is not a de Polignac number, because 499647397 - 2¹⁵ = 499614629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499647347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249823698 + 249823699.

It is an arithmetic number, because the mean of its divisors is an integer number (249823699).

Almost surely, 2^499647397 is an apocalyptic number.

It is an amenable number.

499647397 is a deficient number, since it is larger than the sum of its proper divisors (1).

499647397 is an equidigital number, since it uses as much as digits as its factorization.

499647397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 58.

The square root of 499647397 is about 22352.7939416978. The cubic root of 499647397 is about 793.5139079848.

The spelling of 499647397 in words is "four hundred ninety-nine million, six hundred forty-seven thousand, three hundred ninety-seven".