499989877 has 2 divisors, whose sum is σ = 499989878. Its totient is φ = 499989876.

The previous prime is 499989859. The next prime is 499989923. The reversal of 499989877 is 778989994.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292888996 + 207100881 = 17114^2 + 14391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499989877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499989827) 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 as a sum of consecutive naturals, namely, 249994938 + 249994939.

It is an arithmetic number, because the mean of its divisors is an integer number (249994939).

Almost surely, 2^499989877 is an apocalyptic number.

It is an amenable number.

499989877 is a deficient number, since it is larger than the sum of its proper divisors (1).

499989877 is an equidigital number, since it uses as much as digits as its factorization.

499989877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 70.

The square root of 499989877 is about 22360.4534166908. The cubic root of 499989877 is about 793.6951695277.

The spelling of 499989877 in words is "four hundred ninety-nine million, nine hundred eighty-nine thousand, eight hundred seventy-seven".