498424721 has 2 divisors, whose sum is σ = 498424722. Its totient is φ = 498424720.

The previous prime is 498424681. The next prime is 498424733. The reversal of 498424721 is 127424894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495685696 + 2739025 = 22264^2 + 1655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-498424721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (498424781) 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, 249212360 + 249212361.

It is an arithmetic number, because the mean of its divisors is an integer number (249212361).

Almost surely, 2^498424721 is an apocalyptic number.

It is an amenable number.

498424721 is a deficient number, since it is larger than the sum of its proper divisors (1).

498424721 is an equidigital number, since it uses as much as digits as its factorization.

498424721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 498424721 is about 22325.4276778744. The cubic root of 498424721 is about 792.8661159033.

The spelling of 498424721 in words is "four hundred ninety-eight million, four hundred twenty-four thousand, seven hundred twenty-one".