396001646069 has 2 divisors, whose sum is σ = 396001646070. Its totient is φ = 396001646068.

The previous prime is 396001646021. The next prime is 396001646071. The reversal of 396001646069 is 960646100693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286465800625 + 109535845444 = 535225^2 + 330962^2 .

It is a cyclic number.

It is not a de Polignac number, because 396001646069 - 2⁸ = 396001645813 is a prime.

It is a super-2 number, since 2×396001646069² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 396001646071, it forms a pair of twin primes.

It is a Chen 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 (396001646669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198000823034 + 198000823035.

It is an arithmetic number, because the mean of its divisors is an integer number (198000823035).

Almost surely, 2^396001646069 is an apocalyptic number.

It is an amenable number.

396001646069 is a deficient number, since it is larger than the sum of its proper divisors (1).

396001646069 is an equidigital number, since it uses as much as digits as its factorization.

396001646069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 396001646069 in words is "three hundred ninety-six billion, one million, six hundred forty-six thousand, sixty-nine".