499621860 has 72 divisors (see below), whose sum is σ = 1567795320. Its totient is φ = 128636928.

The previous prime is 499621849. The next prime is 499621867. The reversal of 499621860 is 68126994.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59629284 + 439992576 = 7722^2 + 20976^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (499621867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42637 + ... + 53076.

It is an arithmetic number, because the mean of its divisors is an integer number (21774935).

Almost surely, 2^499621860 is an apocalyptic number.

It is an amenable number.

499621860 is an abundant number, since it is smaller than the sum of its proper divisors (1068173460).

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

499621860 is a wasteful number, since it uses less digits than its factorization.

499621860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95757 (or 95752 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 499621860 is about 22352.2227082677. Note that the first 3 decimals coincide. The cubic root of 499621860 is about 793.5003889111.

The spelling of 499621860 in words is "four hundred ninety-nine million, six hundred twenty-one thousand, eight hundred sixty".