498811021 has 2 divisors, whose sum is σ = 498811022. Its totient is φ = 498811020.

The previous prime is 498811007. The next prime is 498811031. The reversal of 498811021 is 120118894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424936996 + 73874025 = 20614^2 + 8595^2 .

It is a cyclic number.

It is not a de Polignac number, because 498811021 - 2¹⁷ = 498679949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498811031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249405510 + 249405511.

It is an arithmetic number, because the mean of its divisors is an integer number (249405511).

Almost surely, 2^498811021 is an apocalyptic number.

It is an amenable number.

498811021 is a deficient number, since it is larger than the sum of its proper divisors (1).

498811021 is an equidigital number, since it uses as much as digits as its factorization.

498811021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 498811021 is about 22334.0775721766. The cubic root of 498811021 is about 793.0708978051.

The spelling of 498811021 in words is "four hundred ninety-eight million, eight hundred eleven thousand, twenty-one".