498740621 has 2 divisors, whose sum is σ = 498740622. Its totient is φ = 498740620.

The previous prime is 498740581. The next prime is 498740651. The reversal of 498740621 is 126047894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363855625 + 134884996 = 19075^2 + 11614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-498740621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498740651) 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, 249370310 + 249370311.

It is an arithmetic number, because the mean of its divisors is an integer number (249370311).

Almost surely, 2^498740621 is an apocalyptic number.

It is an amenable number.

498740621 is a deficient number, since it is larger than the sum of its proper divisors (1).

498740621 is an equidigital number, since it uses as much as digits as its factorization.

498740621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 498740621 is about 22332.5014496809. The cubic root of 498740621 is about 793.0335858669.

The spelling of 498740621 in words is "four hundred ninety-eight million, seven hundred forty thousand, six hundred twenty-one".