396410108221 has 2 divisors, whose sum is σ = 396410108222. Its totient is φ = 396410108220.

The previous prime is 396410108201. The next prime is 396410108251. The reversal of 396410108221 is 122801014693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392170275225 + 4239832996 = 626235^2 + 65114^2 .

It is a cyclic number.

It is not a de Polignac number, because 396410108221 - 2⁵ = 396410108189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396410108201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198205054110 + 198205054111.

It is an arithmetic number, because the mean of its divisors is an integer number (198205054111).

Almost surely, 2^396410108221 is an apocalyptic number.

It is an amenable number.

396410108221 is a deficient number, since it is larger than the sum of its proper divisors (1).

396410108221 is an equidigital number, since it uses as much as digits as its factorization.

396410108221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 396410108221 in words is "three hundred ninety-six billion, four hundred ten million, one hundred eight thousand, two hundred twenty-one".