98435921 has 2 divisors, whose sum is σ = 98435922. Its totient is φ = 98435920.

The previous prime is 98435917. The next prime is 98435963. The reversal of 98435921 is 12953489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94867600 + 3568321 = 9740^2 + 1889^2 .

It is an emirp because it is prime and its reverse (12953489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98435921 - 2² = 98435917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98435971) 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, 49217960 + 49217961.

It is an arithmetic number, because the mean of its divisors is an integer number (49217961).

Almost surely, 2^98435921 is an apocalyptic number.

It is an amenable number.

98435921 is a deficient number, since it is larger than the sum of its proper divisors (1).

98435921 is an equidigital number, since it uses as much as digits as its factorization.

98435921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 98435921 is about 9921.4878420527. The cubic root of 98435921 is about 461.7262187917.

The spelling of 98435921 in words is "ninety-eight million, four hundred thirty-five thousand, nine hundred twenty-one".