9406204421 has 2 divisors, whose sum is σ = 9406204422. Its totient is φ = 9406204420.

The previous prime is 9406204399. The next prime is 9406204427. The reversal of 9406204421 is 1244026049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5771440900 + 3634763521 = 75970^2 + 60289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9406204421 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 (9406204427) 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, 4703102210 + 4703102211.

It is an arithmetic number, because the mean of its divisors is an integer number (4703102211).

Almost surely, 2^9406204421 is an apocalyptic number.

It is an amenable number.

9406204421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9406204421 is an equidigital number, since it uses as much as digits as its factorization.

9406204421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 9406204421 is about 96985.5887284291. The cubic root of 9406204421 is about 2110.9185238197.

The spelling of 9406204421 in words is "nine billion, four hundred six million, two hundred four thousand, four hundred twenty-one".