490209688 has 32 divisors (see below), whose sum is σ = 976062960. Its totient is φ = 230010880.

The previous prime is 490209683. The next prime is 490209691. The reversal of 490209688 is 886902094.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490209683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42903 + ... + 53113.

Almost surely, 2^490209688 is an apocalyptic number.

It is an amenable number.

490209688 is a deficient number, since it is larger than the sum of its proper divisors (485853272).

490209688 is a wasteful number, since it uses less digits than its factorization.

490209688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10587 (or 10583 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 490209688 is about 22140.6794837015. The cubic root of 490209688 is about 788.4859577326.

The spelling of 490209688 in words is "four hundred ninety million, two hundred nine thousand, six hundred eighty-eight".