98003821 has 2 divisors, whose sum is σ = 98003822. Its totient is φ = 98003820.

The previous prime is 98003813. The next prime is 98003831. The reversal of 98003821 is 12830089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58690921 + 39312900 = 7661^2 + 6270^2 .

It is a cyclic number.

It is not a de Polignac number, because 98003821 - 2³ = 98003813 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 (98003831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49001910 + 49001911.

It is an arithmetic number, because the mean of its divisors is an integer number (49001911).

Almost surely, 2^98003821 is an apocalyptic number.

It is an amenable number.

98003821 is a deficient number, since it is larger than the sum of its proper divisors (1).

98003821 is an equidigital number, since it uses as much as digits as its factorization.

98003821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 98003821 is about 9899.6879243742. The cubic root of 98003821 is about 461.0496211270.

The spelling of 98003821 in words is "ninety-eight million, three thousand, eight hundred twenty-one".