494963509 has 4 divisors (see below), whose sum is σ = 521014240. Its totient is φ = 468912780.

The previous prime is 494963479. The next prime is 494963527. The reversal of 494963509 is 905369494.

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 494963509 - 2²¹ = 492866357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494963309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13025337 + ... + 13025374.

It is an arithmetic number, because the mean of its divisors is an integer number (130253560).

Almost surely, 2^494963509 is an apocalyptic number.

It is an amenable number.

494963509 is a deficient number, since it is larger than the sum of its proper divisors (26050731).

494963509 is a wasteful number, since it uses less digits than its factorization.

494963509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26050730.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 494963509 is about 22247.7753719333. The cubic root of 494963509 is about 791.0265504451.

The spelling of 494963509 in words is "four hundred ninety-four million, nine hundred sixty-three thousand, five hundred nine".