396966901 has 2 divisors, whose sum is σ = 396966902. Its totient is φ = 396966900.

The previous prime is 396966887. The next prime is 396966917. The reversal of 396966901 is 109669693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278723025 + 118243876 = 16695^2 + 10874^2 .

It is a cyclic number.

It is not a de Polignac number, because 396966901 - 2²¹ = 394869749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396966701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198483450 + 198483451.

It is an arithmetic number, because the mean of its divisors is an integer number (198483451).

Almost surely, 2^396966901 is an apocalyptic number.

It is an amenable number.

396966901 is a deficient number, since it is larger than the sum of its proper divisors (1).

396966901 is an equidigital number, since it uses as much as digits as its factorization.

396966901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 396966901 is about 19924.0282322627. The cubic root of 396966901 is about 734.9392338737.

The spelling of 396966901 in words is "three hundred ninety-six million, nine hundred sixty-six thousand, nine hundred one".