499997788 has 12 divisors (see below), whose sum is σ = 896337792. Its totient is φ = 243901280.

The previous prime is 499997783. The next prime is 499997789. The reversal of 499997788 is 887799994.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499997783) 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 3 ways as a sum of consecutive naturals, for example, 1524220 + ... + 1524547.

It is an arithmetic number, because the mean of its divisors is an integer number (74694816).

Almost surely, 2^499997788 is an apocalyptic number.

It is an amenable number.

499997788 is a deficient number, since it is larger than the sum of its proper divisors (396340004).

499997788 is a wasteful number, since it uses less digits than its factorization.

499997788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048812 (or 3048810 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 70.

The square root of 499997788 is about 22360.6303131195. The cubic root of 499997788 is about 793.6993555387.

The spelling of 499997788 in words is "four hundred ninety-nine million, nine hundred ninety-seven thousand, seven hundred eighty-eight".