497208409 has 4 divisors (see below), whose sum is σ = 497435904. Its totient is φ = 496980916.

The previous prime is 497208389. The next prime is 497208419. The reversal of 497208409 is 904802794.

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 a cyclic number.

It is not a de Polignac number, because 497208409 - 2⁹ = 497207897 is a prime.

It is a super-2 number, since 2×497208409² = 494432403960622562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497208419) 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, 110437 + ... + 114850.

It is an arithmetic number, because the mean of its divisors is an integer number (124358976).

Almost surely, 2^497208409 is an apocalyptic number.

It is an amenable number.

497208409 is a deficient number, since it is larger than the sum of its proper divisors (227495).

497208409 is a wasteful number, since it uses less digits than its factorization.

497208409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227494.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 497208409 is about 22298.1705303372. The cubic root of 497208409 is about 792.2206435765.

The spelling of 497208409 in words is "four hundred ninety-seven million, two hundred eight thousand, four hundred nine".