499559881 has 2 divisors, whose sum is σ = 499559882. Its totient is φ = 499559880.

The previous prime is 499559857. The next prime is 499559923. The reversal of 499559881 is 188955994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412902400 + 86657481 = 20320^2 + 9309^2 .

It is a cyclic number.

It is not a de Polignac number, because 499559881 - 2⁹ = 499559369 is a prime.

It is a super-2 number, since 2×499559881² = 499120149409468322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499559831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249779940 + 249779941.

It is an arithmetic number, because the mean of its divisors is an integer number (249779941).

Almost surely, 2^499559881 is an apocalyptic number.

It is an amenable number.

499559881 is a deficient number, since it is larger than the sum of its proper divisors (1).

499559881 is an equidigital number, since it uses as much as digits as its factorization.

499559881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 58.

The square root of 499559881 is about 22350.8362483376. The cubic root of 499559881 is about 793.4675758323.

The spelling of 499559881 in words is "four hundred ninety-nine million, five hundred fifty-nine thousand, eight hundred eighty-one".