499739220 has 216 divisors, whose sum is σ = 1639546272. Its totient is φ = 127759680.

The previous prime is 499739171. The next prime is 499739221. The reversal of 499739220 is 22937994.

499739220 is a `hidden beast` number, since 499 + 73 + 92 + 2 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499739221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4670407 + ... + 4670513.

It is an arithmetic number, because the mean of its divisors is an integer number (7590492).

Almost surely, 2^499739220 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 499739220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819773136).

499739220 is an abundant number, since it is smaller than the sum of its proper divisors (1139807052).

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

499739220 is a wasteful number, since it uses less digits than its factorization.

499739220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 499739220 is about 22354.8477963953. The cubic root of 499739220 is about 793.5625145055.

The spelling of 499739220 in words is "four hundred ninety-nine million, seven hundred thirty-nine thousand, two hundred twenty".