498981817 has 2 divisors, whose sum is σ = 498981818. Its totient is φ = 498981816.

The previous prime is 498981787. The next prime is 498981829. The reversal of 498981817 is 718189894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 437813776 + 61168041 = 20924^2 + 7821^2 .

It is a cyclic number.

It is not a de Polignac number, because 498981817 - 2⁷ = 498981689 is a prime.

It is not a weakly prime, because it can be changed into another prime (498981017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249490908 + 249490909.

It is an arithmetic number, because the mean of its divisors is an integer number (249490909).

Almost surely, 2^498981817 is an apocalyptic number.

It is an amenable number.

498981817 is a deficient number, since it is larger than the sum of its proper divisors (1).

498981817 is an equidigital number, since it uses as much as digits as its factorization.

498981817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 55.

The square root of 498981817 is about 22337.9009085455. The cubic root of 498981817 is about 793.1614049473.

It can be divided in two parts, 49898 and 1817, that added together give a palindrome (51715).

The spelling of 498981817 in words is "four hundred ninety-eight million, nine hundred eighty-one thousand, eight hundred seventeen".