396543001 has 2 divisors, whose sum is σ = 396543002. Its totient is φ = 396543000.

The previous prime is 396542989. The next prime is 396543019. The reversal of 396543001 is 100345693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391248400 + 5294601 = 19780^2 + 2301^2 .

It is a cyclic number.

It is not a de Polignac number, because 396543001 - 2²⁵ = 362988569 is a prime.

It is not a weakly prime, because it can be changed into another prime (396543401) 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, 198271500 + 198271501.

It is an arithmetic number, because the mean of its divisors is an integer number (198271501).

Almost surely, 2^396543001 is an apocalyptic number.

It is an amenable number.

396543001 is a deficient number, since it is larger than the sum of its proper divisors (1).

396543001 is an equidigital number, since it uses as much as digits as its factorization.

396543001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 396543001 is about 19913.3874817922. The cubic root of 396543001 is about 734.6775397636.

Adding to 396543001 its reverse (100345693), we get a palindrome (496888694).

The spelling of 396543001 in words is "three hundred ninety-six million, five hundred forty-three thousand, one".