94216321 has 2 divisors, whose sum is σ = 94216322. Its totient is φ = 94216320.

The previous prime is 94216313. The next prime is 94216337. The reversal of 94216321 is 12361249.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81649296 + 12567025 = 9036^2 + 3545^2 .

It is an emirp because it is prime and its reverse (12361249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94216321 - 2³ = 94216313 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94216321.

It is not a weakly prime, because it can be changed into another prime (94216301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47108160 + 47108161.

It is an arithmetic number, because the mean of its divisors is an integer number (47108161).

Almost surely, 2^94216321 is an apocalyptic number.

It is an amenable number.

94216321 is a deficient number, since it is larger than the sum of its proper divisors (1).

94216321 is an equidigital number, since it uses as much as digits as its factorization.

94216321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 94216321 is about 9706.5092077430. The cubic root of 94216321 is about 455.0321130175.

The spelling of 94216321 in words is "ninety-four million, two hundred sixteen thousand, three hundred twenty-one".