406004133 has 4 divisors (see below), whose sum is σ = 541338848. Its totient is φ = 270669420.

The previous prime is 406004107. The next prime is 406004153. The reversal of 406004133 is 331400604.

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 not a de Polignac number, because 406004133 - 2²⁰ = 404955557 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 (406004153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67667353 + ... + 67667358.

It is an arithmetic number, because the mean of its divisors is an integer number (135334712).

Almost surely, 2^406004133 is an apocalyptic number.

It is an amenable number.

406004133 is a deficient number, since it is larger than the sum of its proper divisors (135334715).

406004133 is a wasteful number, since it uses less digits than its factorization.

406004133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135334714.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 406004133 is about 20149.5442380219. The cubic root of 406004133 is about 740.4745756636.

Adding to 406004133 its reverse (331400604), we get a palindrome (737404737).

The spelling of 406004133 in words is "four hundred six million, four thousand, one hundred thirty-three".