499521698 has 16 divisors (see below), whose sum is σ = 814065336. Its totient is φ = 228506880.

The previous prime is 499521697. The next prime is 499521703. The reversal of 499521698 is 896125994.

It can be written as a sum of positive squares in 4 ways, for example, as 202407529 + 297114169 = 14227^2 + 17237^2 .

It is not an unprimeable number, because it can be changed into a prime (499521691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82073 + ... + 87948.

Almost surely, 2^499521698 is an apocalyptic number.

499521698 is a deficient number, since it is larger than the sum of its proper divisors (314543638).

499521698 is a wasteful number, since it uses less digits than its factorization.

499521698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170149.

The product of its digits is 1399680, while the sum is 53.

The square root of 499521698 is about 22349.9820581583. The cubic root of 499521698 is about 793.4473595409.

The spelling of 499521698 in words is "four hundred ninety-nine million, five hundred twenty-one thousand, six hundred ninety-eight".