497822809 has 4 divisors (see below), whose sum is σ = 543079440. Its totient is φ = 452566180.

The previous prime is 497822789. The next prime is 497822837. The reversal of 497822809 is 908228794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 497822809 - 2⁷ = 497822681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497822009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22628299 + ... + 22628320.

It is an arithmetic number, because the mean of its divisors is an integer number (135769860).

Almost surely, 2^497822809 is an apocalyptic number.

It is an amenable number.

497822809 is a deficient number, since it is larger than the sum of its proper divisors (45256631).

497822809 is a wasteful number, since it uses less digits than its factorization.

497822809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45256630.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 497822809 is about 22311.9431919320. The cubic root of 497822809 is about 792.5468247136.

The spelling of 497822809 in words is "four hundred ninety-seven million, eight hundred twenty-two thousand, eight hundred nine".