497648849 has 2 divisors, whose sum is σ = 497648850. Its totient is φ = 497648848.

The previous prime is 497648839. The next prime is 497648873. The reversal of 497648849 is 948846794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329168449 + 168480400 = 18143^2 + 12980^2 .

It is a cyclic number.

It is not a de Polignac number, because 497648849 - 2¹² = 497644753 is a prime.

It is a super-2 number, since 2×497648849² = 495308753822049602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (497648839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248824424 + 248824425.

It is an arithmetic number, because the mean of its divisors is an integer number (248824425).

Almost surely, 2^497648849 is an apocalyptic number.

It is an amenable number.

497648849 is a deficient number, since it is larger than the sum of its proper divisors (1).

497648849 is an equidigital number, since it uses as much as digits as its factorization.

497648849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 59.

The square root of 497648849 is about 22308.0444907213. The cubic root of 497648849 is about 792.4544976810.

The spelling of 497648849 in words is "four hundred ninety-seven million, six hundred forty-eight thousand, eight hundred forty-nine".