93916621 has 2 divisors, whose sum is σ = 93916622. Its totient is φ = 93916620.

The previous prime is 93916607. The next prime is 93916631. The reversal of 93916621 is 12661939.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90992521 + 2924100 = 9539^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 93916621 - 2¹⁹ = 93392333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93916631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46958310 + 46958311.

It is an arithmetic number, because the mean of its divisors is an integer number (46958311).

Almost surely, 2^93916621 is an apocalyptic number.

It is an amenable number.

93916621 is a deficient number, since it is larger than the sum of its proper divisors (1).

93916621 is an equidigital number, since it uses as much as digits as its factorization.

93916621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 93916621 is about 9691.0588172810. The cubic root of 93916621 is about 454.5491182141.

The spelling of 93916621 in words is "ninety-three million, nine hundred sixteen thousand, six hundred twenty-one".