4898021 has 2 divisors, whose sum is σ = 4898022. Its totient is φ = 4898020.

The previous prime is 4898017. The next prime is 4898027. The reversal of 4898021 is 1208984.

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., 4468996 + 429025 = 2114^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 4898021 - 2² = 4898017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4898027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2449010 + 2449011.

It is an arithmetic number, because the mean of its divisors is an integer number (2449011).

Almost surely, 2^4898021 is an apocalyptic number.

It is an amenable number.

4898021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4898021 is an equidigital number, since it uses as much as digits as its factorization.

4898021 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 32.

The square root of 4898021 is about 2213.1473064394. The cubic root of 4898021 is about 169.8270559545.

The spelling of 4898021 in words is "four million, eight hundred ninety-eight thousand, twenty-one".