98455921 has 2 divisors, whose sum is σ = 98455922. Its totient is φ = 98455920.

The previous prime is 98455919. The next prime is 98455963. The reversal of 98455921 is 12955489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77880625 + 20575296 = 8825^2 + 4536^2 .

It is a cyclic number.

It is not a de Polignac number, because 98455921 - 2¹ = 98455919 is a prime.

Together with 98455919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (98435921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49227960 + 49227961.

It is an arithmetic number, because the mean of its divisors is an integer number (49227961).

Almost surely, 2^98455921 is an apocalyptic number.

It is an amenable number.

98455921 is a deficient number, since it is larger than the sum of its proper divisors (1).

98455921 is an equidigital number, since it uses as much as digits as its factorization.

98455921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 43.

The square root of 98455921 is about 9922.4957042067. The cubic root of 98455921 is about 461.7574875227.

The spelling of 98455921 in words is "ninety-eight million, four hundred fifty-five thousand, nine hundred twenty-one".