7794221 has 2 divisors, whose sum is σ = 7794222. Its totient is φ = 7794220.

The previous prime is 7794209. The next prime is 7794229. The reversal of 7794221 is 1224977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 148996 = 2765^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 7794221 - 2¹⁰ = 7793197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7794229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3897110 + 3897111.

It is an arithmetic number, because the mean of its divisors is an integer number (3897111).

Almost surely, 2^7794221 is an apocalyptic number.

It is an amenable number.

7794221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7794221 is an equidigital number, since it uses as much as digits as its factorization.

7794221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 7794221 is about 2791.8132100841. The cubic root of 7794221 is about 198.2702580930.

The spelling of 7794221 in words is "seven million, seven hundred ninety-four thousand, two hundred twenty-one".