490736609 has 8 divisors (see below), whose sum is σ = 543340128. Its totient is φ = 439464960.

The previous prime is 490736591. The next prime is 490736633. The reversal of 490736609 is 906637094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 490736609 - 2¹⁶ = 490671073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 490736609.

It is not an unprimeable number, because it can be changed into a prime (490736669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332192 + ... + 333665.

It is an arithmetic number, because the mean of its divisors is an integer number (67917516).

Almost surely, 2^490736609 is an apocalyptic number.

It is an amenable number.

490736609 is a deficient number, since it is larger than the sum of its proper divisors (52603519).

490736609 is a wasteful number, since it uses less digits than its factorization.

490736609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665935.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 490736609 is about 22152.5756741739. The cubic root of 490736609 is about 788.7683681970.

The spelling of 490736609 in words is "four hundred ninety million, seven hundred thirty-six thousand, six hundred nine".