405306133 has 4 divisors (see below), whose sum is σ = 409241248. Its totient is φ = 401371020.

The previous prime is 405306079. The next prime is 405306151. The reversal of 405306133 is 331603504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405306133 is a prime.

It is a super-2 number, since 2×405306133² = 328546122894827378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405306098 and 405306107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405306173) 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 in 3 ways as a sum of consecutive naturals, for example, 1967403 + ... + 1967608.

It is an arithmetic number, because the mean of its divisors is an integer number (102310312).

Almost surely, 2^405306133 is an apocalyptic number.

It is an amenable number.

405306133 is a deficient number, since it is larger than the sum of its proper divisors (3935115).

405306133 is a wasteful number, since it uses less digits than its factorization.

405306133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935114.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 405306133 is about 20132.2162962750. The cubic root of 405306133 is about 740.0499923616.

Adding to 405306133 its reverse (331603504), we get a palindrome (736909637).

The spelling of 405306133 in words is "four hundred five million, three hundred six thousand, one hundred thirty-three".