396915133 has 4 divisors (see below), whose sum is σ = 420263100. Its totient is φ = 373567168.

The previous prime is 396915131. The next prime is 396915143. The reversal of 396915133 is 331519693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331519693 = 10667 ⋅31079.

It can be written as a sum of positive squares in 2 ways, for example, as 250335684 + 146579449 = 15822^2 + 12107^2 .

It is a cyclic number.

It is not a de Polignac number, because 396915133 - 2¹ = 396915131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396915131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11673958 + ... + 11673991.

It is an arithmetic number, because the mean of its divisors is an integer number (105065775).

Almost surely, 2^396915133 is an apocalyptic number.

It is an amenable number.

396915133 is a deficient number, since it is larger than the sum of its proper divisors (23347967).

396915133 is a wasteful number, since it uses less digits than its factorization.

396915133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23347966.

The product of its digits is 65610, while the sum is 40.

The square root of 396915133 is about 19922.7290550266. The cubic root of 396915133 is about 734.9072849562.

The spelling of 396915133 in words is "three hundred ninety-six million, nine hundred fifteen thousand, one hundred thirty-three".