494752009 has 4 divisors (see below), whose sum is σ = 497238400. Its totient is φ = 492265620.

The previous prime is 494752007. The next prime is 494752067. The reversal of 494752009 is 900257494.

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 494752009 - 2¹ = 494752007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494752007) 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, 1242897 + ... + 1243294.

It is an arithmetic number, because the mean of its divisors is an integer number (124309600).

Almost surely, 2^494752009 is an apocalyptic number.

It is an amenable number.

494752009 is a deficient number, since it is larger than the sum of its proper divisors (2486391).

494752009 is a wasteful number, since it uses less digits than its factorization.

494752009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486390.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 494752009 is about 22243.0215798124. The cubic root of 494752009 is about 790.9138647302.

The spelling of 494752009 in words is "four hundred ninety-four million, seven hundred fifty-two thousand, nine".