497985900 has 72 divisors (see below), whose sum is σ = 1444438800. Its totient is φ = 132464640.

The previous prime is 497985893. The next prime is 497985907. The reversal of 497985900 is 9589794.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (497985893) and next prime (497985907).

It is not an unprimeable number, because it can be changed into a prime (497985907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132852 + ... + 136548.

It is an arithmetic number, because the mean of its divisors is an integer number (20061650).

Almost surely, 2^497985900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497985900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722219400).

497985900 is an abundant number, since it is smaller than the sum of its proper divisors (946452900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

497985900 is a wasteful number, since it uses less digits than its factorization.

497985900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163 (or 4156 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 497985900 is about 22315.5976841312. The cubic root of 497985900 is about 792.6333636314.

The spelling of 497985900 in words is "four hundred ninety-seven million, nine hundred eighty-five thousand, nine hundred".