98600921 has 2 divisors, whose sum is σ = 98600922. Its totient is φ = 98600920.

The previous prime is 98600891. The next prime is 98600923. The reversal of 98600921 is 12900689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92544400 + 6056521 = 9620^2 + 2461^2 .

It is a cyclic number.

It is not a de Polignac number, because 98600921 - 2⁶ = 98600857 is a prime.

Together with 98600923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98600923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49300460 + 49300461.

It is an arithmetic number, because the mean of its divisors is an integer number (49300461).

Almost surely, 2^98600921 is an apocalyptic number.

It is an amenable number.

98600921 is a deficient number, since it is larger than the sum of its proper divisors (1).

98600921 is an equidigital number, since it uses as much as digits as its factorization.

98600921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 98600921 is about 9929.7996455115. The cubic root of 98600921 is about 461.9840592815.

The spelling of 98600921 in words is "ninety-eight million, six hundred thousand, nine hundred twenty-one".