98421019 has 2 divisors, whose sum is σ = 98421020. Its totient is φ = 98421018.

The previous prime is 98421017. The next prime is 98421031. The reversal of 98421019 is 91012489.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98421019 - 2¹ = 98421017 is a prime.

It is a super-2 number, since 2×98421019² = 19373393961996722, which contains 22 as substring.

Together with 98421017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (98421013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49210509 + 49210510.

It is an arithmetic number, because the mean of its divisors is an integer number (49210510).

Almost surely, 2^98421019 is an apocalyptic number.

98421019 is a deficient number, since it is larger than the sum of its proper divisors (1).

98421019 is an equidigital number, since it uses as much as digits as its factorization.

98421019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 98421019 is about 9920.7368173942. The cubic root of 98421019 is about 461.7029177064.

The spelling of 98421019 in words is "ninety-eight million, four hundred twenty-one thousand, nineteen".