93505421 has 2 divisors, whose sum is σ = 93505422. Its totient is φ = 93505420.

The previous prime is 93505417. The next prime is 93505453. The reversal of 93505421 is 12450539.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80102500 + 13402921 = 8950^2 + 3661^2 .

It is an emirp because it is prime and its reverse (12450539) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93505421 - 2² = 93505417 is a prime.

It is a Sophie Germain 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 (93505411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46752710 + 46752711.

It is an arithmetic number, because the mean of its divisors is an integer number (46752711).

Almost surely, 2^93505421 is an apocalyptic number.

It is an amenable number.

93505421 is a deficient number, since it is larger than the sum of its proper divisors (1).

93505421 is an equidigital number, since it uses as much as digits as its factorization.

93505421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 93505421 is about 9669.8201120807. The cubic root of 93505421 is about 453.8847556917.

The spelling of 93505421 in words is "ninety-three million, five hundred five thousand, four hundred twenty-one".