93450821 has 2 divisors, whose sum is σ = 93450822. Its totient is φ = 93450820.

The previous prime is 93450811. The next prime is 93450829. The reversal of 93450821 is 12805439.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73290721 + 20160100 = 8561^2 + 4490^2 .

It is a cyclic number.

It is not a de Polignac number, because 93450821 - 2¹⁸ = 93188677 is a prime.

It is a super-3 number, since 3×93450821³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93450829) 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, 46725410 + 46725411.

It is an arithmetic number, because the mean of its divisors is an integer number (46725411).

Almost surely, 2^93450821 is an apocalyptic number.

It is an amenable number.

93450821 is a deficient number, since it is larger than the sum of its proper divisors (1).

93450821 is an equidigital number, since it uses as much as digits as its factorization.

93450821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 93450821 is about 9666.9964828793. The cubic root of 93450821 is about 453.7963938528.

The spelling of 93450821 in words is "ninety-three million, four hundred fifty thousand, eight hundred twenty-one".