94415221 has 2 divisors, whose sum is σ = 94415222. Its totient is φ = 94415220.

The previous prime is 94415219. The next prime is 94415227. The reversal of 94415221 is 12251449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89984196 + 4431025 = 9486^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 94415221 - 2¹ = 94415219 is a prime.

Together with 94415219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 94415221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94415227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47207610 + 47207611.

It is an arithmetic number, because the mean of its divisors is an integer number (47207611).

Almost surely, 2^94415221 is an apocalyptic number.

It is an amenable number.

94415221 is a deficient number, since it is larger than the sum of its proper divisors (1).

94415221 is an equidigital number, since it uses as much as digits as its factorization.

94415221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 94415221 is about 9716.7495079373. The cubic root of 94415221 is about 455.3520939293.

The spelling of 94415221 in words is "ninety-four million, four hundred fifteen thousand, two hundred twenty-one".