98588921 has 2 divisors, whose sum is σ = 98588922. Its totient is φ = 98588920.

The previous prime is 98588881. The next prime is 98588953. The reversal of 98588921 is 12988589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97515625 + 1073296 = 9875^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 98588921 - 2⁶ = 98588857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98588921.

It is not a weakly prime, because it can be changed into another prime (98588821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49294460 + 49294461.

It is an arithmetic number, because the mean of its divisors is an integer number (49294461).

Almost surely, 2^98588921 is an apocalyptic number.

It is an amenable number.

98588921 is a deficient number, since it is larger than the sum of its proper divisors (1).

98588921 is an equidigital number, since it uses as much as digits as its factorization.

98588921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 50.

The square root of 98588921 is about 9929.1953853271. The cubic root of 98588921 is about 461.9653169493.

The spelling of 98588921 in words is "ninety-eight million, five hundred eighty-eight thousand, nine hundred twenty-one".