94205821 has 2 divisors, whose sum is σ = 94205822. Its totient is φ = 94205820.

The previous prime is 94205753. The next prime is 94205827. The reversal of 94205821 is 12850249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86304100 + 7901721 = 9290^2 + 2811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94205821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94205827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47102910 + 47102911.

It is an arithmetic number, because the mean of its divisors is an integer number (47102911).

Almost surely, 2^94205821 is an apocalyptic number.

It is an amenable number.

94205821 is a deficient number, since it is larger than the sum of its proper divisors (1).

94205821 is an equidigital number, since it uses as much as digits as its factorization.

94205821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 94205821 is about 9705.9683185141. The cubic root of 94205821 is about 455.0152086049.

The spelling of 94205821 in words is "ninety-four million, two hundred five thousand, eight hundred twenty-one".