499927081 has 2 divisors, whose sum is σ = 499927082. Its totient is φ = 499927080.

The previous prime is 499927079. The next prime is 499927121. The reversal of 499927081 is 180729994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460488681 + 39438400 = 21459^2 + 6280^2 .

It is a cyclic number.

It is not a de Polignac number, because 499927081 - 2¹ = 499927079 is a prime.

It is a super-2 number, since 2×499927081² = 499854172634361122, which contains 22 as substring.

Together with 499927079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (499922081) 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 as a sum of consecutive naturals, namely, 249963540 + 249963541.

It is an arithmetic number, because the mean of its divisors is an integer number (249963541).

Almost surely, 2^499927081 is an apocalyptic number.

It is an amenable number.

499927081 is a deficient number, since it is larger than the sum of its proper divisors (1).

499927081 is an equidigital number, since it uses as much as digits as its factorization.

499927081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 499927081 is about 22359.0491971372. The cubic root of 499927081 is about 793.6619402092.

The spelling of 499927081 in words is "four hundred ninety-nine million, nine hundred twenty-seven thousand, eighty-one".