94184221 has 2 divisors, whose sum is σ = 94184222. Its totient is φ = 94184220.

The previous prime is 94184219. The next prime is 94184239. The reversal of 94184221 is 12248149.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63824121 + 30360100 = 7989^2 + 5510^2 .

It is an emirp because it is prime and its reverse (12248149) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94184221 - 2¹ = 94184219 is a prime.

Together with 94184219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94184261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47092110 + 47092111.

It is an arithmetic number, because the mean of its divisors is an integer number (47092111).

Almost surely, 2^94184221 is an apocalyptic number.

It is an amenable number.

94184221 is a deficient number, since it is larger than the sum of its proper divisors (1).

94184221 is an equidigital number, since it uses as much as digits as its factorization.

94184221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 94184221 is about 9704.8555373071. The cubic root of 94184221 is about 454.9804298631.

The spelling of 94184221 in words is "ninety-four million, one hundred eighty-four thousand, two hundred twenty-one".