93968821 has 2 divisors, whose sum is σ = 93968822. Its totient is φ = 93968820.

The previous prime is 93968807. The next prime is 93968891. The reversal of 93968821 is 12886939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47196900 + 46771921 = 6870^2 + 6839^2 .

It is a cyclic number.

It is not a de Polignac number, because 93968821 - 2¹¹ = 93966773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93968801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46984410 + 46984411.

It is an arithmetic number, because the mean of its divisors is an integer number (46984411).

Almost surely, 2^93968821 is an apocalyptic number.

It is an amenable number.

93968821 is a deficient number, since it is larger than the sum of its proper divisors (1).

93968821 is an equidigital number, since it uses as much as digits as its factorization.

93968821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 93968821 is about 9693.7516473242. The cubic root of 93968821 is about 454.6333172589.

The spelling of 93968821 in words is "ninety-three million, nine hundred sixty-eight thousand, eight hundred twenty-one".