499891430 has 32 divisors (see below), whose sum is σ = 969228288. Its totient is φ = 185090400.

The previous prime is 499891421. The next prime is 499891439. The reversal of 499891430 is 34198994.

It is an interprime number because it is at equal distance from previous prime (499891421) and next prime (499891439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499891439) 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 15 ways as a sum of consecutive naturals, for example, 27926 + ... + 42185.

It is an arithmetic number, because the mean of its divisors is an integer number (30288384).

Almost surely, 2^499891430 is an apocalyptic number.

499891430 is a deficient number, since it is larger than the sum of its proper divisors (469336858).

499891430 is a wasteful number, since it uses less digits than its factorization.

499891430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70172.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 499891430 is about 22358.2519441928. The cubic root of 499891430 is about 793.6430737814.

The spelling of 499891430 in words is "four hundred ninety-nine million, eight hundred ninety-one thousand, four hundred thirty".