497199805 has 4 divisors (see below), whose sum is σ = 596639772. Its totient is φ = 397759840.

The previous prime is 497199779. The next prime is 497199817. The reversal of 497199805 is 508991794.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145974724 + 351225081 = 12082^2 + 18741^2 .

It is not a de Polignac number, because 497199805 - 2⁹ = 497199293 is a prime.

It is a super-4 number, since 4×497199805⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 49719976 + ... + 49719985.

It is an arithmetic number, because the mean of its divisors is an integer number (149159943).

Almost surely, 2^497199805 is an apocalyptic number.

It is an amenable number.

497199805 is a deficient number, since it is larger than the sum of its proper divisors (99439967).

497199805 is an equidigital number, since it uses as much as digits as its factorization.

497199805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99439966.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 497199805 is about 22297.9775988765. The cubic root of 497199805 is about 792.2160738591.

The spelling of 497199805 in words is "four hundred ninety-seven million, one hundred ninety-nine thousand, eight hundred five".