497442309 has 32 divisors (see below), whose sum is σ = 820076544. Its totient is φ = 261178560.

The previous prime is 497442289. The next prime is 497442317. The reversal of 497442309 is 903244794.

It is not a de Polignac number, because 497442309 - 2⁵ = 497442277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497442359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56794 + ... + 64964.

It is an arithmetic number, because the mean of its divisors is an integer number (25627392).

Almost surely, 2^497442309 is an apocalyptic number.

It is an amenable number.

497442309 is a deficient number, since it is larger than the sum of its proper divisors (322634235).

497442309 is a wasteful number, since it uses less digits than its factorization.

497442309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8417.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 497442309 is about 22303.4147385552. The cubic root of 497442309 is about 792.3448512903.

The spelling of 497442309 in words is "four hundred ninety-seven million, four hundred forty-two thousand, three hundred nine".