499643540 has 24 divisors (see below), whose sum is σ = 1144638432. Its totient is φ = 181688480.

The previous prime is 499643537. The next prime is 499643593. The reversal of 499643540 is 45346994.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 499643491 and 499643500.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1135334 + ... + 1135773.

It is an arithmetic number, because the mean of its divisors is an integer number (47693268).

Almost surely, 2^499643540 is an apocalyptic number.

It is an amenable number.

499643540 is an abundant number, since it is smaller than the sum of its proper divisors (644994892).

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

499643540 is a wasteful number, since it uses less digits than its factorization.

499643540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271127 (or 2271125 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 499643540 is about 22352.7076659630. The cubic root of 499643540 is about 793.5118661509.

The spelling of 499643540 in words is "four hundred ninety-nine million, six hundred forty-three thousand, five hundred forty".