497926909 has 2 divisors, whose sum is σ = 497926910. Its totient is φ = 497926908.

The previous prime is 497926907. The next prime is 497926921. The reversal of 497926909 is 909629794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311522500 + 186404409 = 17650^2 + 13653^2 .

It is a cyclic number.

It is not a de Polignac number, because 497926909 - 2¹ = 497926907 is a prime.

Together with 497926907, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 497926909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497926907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248963454 + 248963455.

It is an arithmetic number, because the mean of its divisors is an integer number (248963455).

Almost surely, 2^497926909 is an apocalyptic number.

It is an amenable number.

497926909 is a deficient number, since it is larger than the sum of its proper divisors (1).

497926909 is an equidigital number, since it uses as much as digits as its factorization.

497926909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The square root of 497926909 is about 22314.2759013148. The cubic root of 497926909 is about 792.6020641635.

The spelling of 497926909 in words is "four hundred ninety-seven million, nine hundred twenty-six thousand, nine hundred nine".