396925121 has 2 divisors, whose sum is σ = 396925122. Its totient is φ = 396925120.

The previous prime is 396925091. The next prime is 396925157. The reversal of 396925121 is 121529693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329930896 + 66994225 = 18164^2 + 8185^2 .

It is a cyclic number.

It is not a de Polignac number, because 396925121 - 2⁶ = 396925057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_21180899 and since 396925121 and 21180899 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (396925171) 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, 198462560 + 198462561.

It is an arithmetic number, because the mean of its divisors is an integer number (198462561).

Almost surely, 2^396925121 is an apocalyptic number.

It is an amenable number.

396925121 is a deficient number, since it is larger than the sum of its proper divisors (1).

396925121 is an equidigital number, since it uses as much as digits as its factorization.

396925121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 396925121 is about 19922.9797219191. The cubic root of 396925121 is about 734.9134493239.

The spelling of 396925121 in words is "three hundred ninety-six million, nine hundred twenty-five thousand, one hundred twenty-one".