396808133 has 2 divisors, whose sum is σ = 396808134. Its totient is φ = 396808132.

The previous prime is 396808117. The next prime is 396808147. The reversal of 396808133 is 331808693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199883044 + 196925089 = 14138^2 + 14033^2 .

It is an emirp because it is prime and its reverse (331808693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396808133 - 2⁴ = 396808117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396801133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198404066 + 198404067.

It is an arithmetic number, because the mean of its divisors is an integer number (198404067).

Almost surely, 2^396808133 is an apocalyptic number.

It is an amenable number.

396808133 is a deficient number, since it is larger than the sum of its proper divisors (1).

396808133 is an equidigital number, since it uses as much as digits as its factorization.

396808133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 396808133 is about 19920.0434989485. The cubic root of 396808133 is about 734.8412404880.

The spelling of 396808133 in words is "three hundred ninety-six million, eight hundred eight thousand, one hundred thirty-three".