499991250 has 320 divisors, whose sum is σ = 1554702336. Its totient is φ = 105600000.

The previous prime is 499991203. The next prime is 499991257. The reversal of 499991250 is 52199994.

It is a self number, because there is not a number n which added to its sum of digits gives 499991250.

It is not an unprimeable number, because it can be changed into a prime (499991257) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 16128735 + ... + 16128765.

Almost surely, 2^499991250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499991250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777351168).

499991250 is an abundant number, since it is smaller than the sum of its proper divisors (1054711086).

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

499991250 is a wasteful number, since it uses less digits than its factorization.

499991250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 48.

The square root of 499991250 is about 22360.4841181939. The cubic root of 499991250 is about 793.6958960374.

The spelling of 499991250 in words is "four hundred ninety-nine million, nine hundred ninety-one thousand, two hundred fifty".