93539221 has 2 divisors, whose sum is σ = 93539222. Its totient is φ = 93539220.

The previous prime is 93539213. The next prime is 93539263. The reversal of 93539221 is 12293539.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85192900 + 8346321 = 9230^2 + 2889^2 .

It is an emirp because it is prime and its reverse (12293539) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93539221 - 2³ = 93539213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93539521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46769610 + 46769611.

It is an arithmetic number, because the mean of its divisors is an integer number (46769611).

Almost surely, 2^93539221 is an apocalyptic number.

It is an amenable number.

93539221 is a deficient number, since it is larger than the sum of its proper divisors (1).

93539221 is an equidigital number, since it uses as much as digits as its factorization.

93539221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 34.

The square root of 93539221 is about 9671.5676598988. The cubic root of 93539221 is about 453.9394386411.

The spelling of 93539221 in words is "ninety-three million, five hundred thirty-nine thousand, two hundred twenty-one".