499983156 has 18 divisors (see below), whose sum is σ = 1263846402. Its totient is φ = 166661040.

The previous prime is 499983149. The next prime is 499983173. The reversal of 499983156 is 651389994.

It can be written as a sum of positive squares in only one way, i.e., 406667556 + 93315600 = 20166^2 + 9660^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6944175 + ... + 6944246.

It is an arithmetic number, because the mean of its divisors is an integer number (70213689).

Almost surely, 2^499983156 is an apocalyptic number.

It is an amenable number.

499983156 is an abundant number, since it is smaller than the sum of its proper divisors (763863246).

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

499983156 is a wasteful number, since it uses less digits than its factorization.

499983156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13888431 (or 13888426 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 499983156 is about 22360.3031285356. The cubic root of 499983156 is about 793.6916131562.

The spelling of 499983156 in words is "four hundred ninety-nine million, nine hundred eighty-three thousand, one hundred fifty-six".