406809233 has 4 divisors (see below), whose sum is σ = 407059380. Its totient is φ = 406559088.

The previous prime is 406809229. The next prime is 406809239. The reversal of 406809233 is 332908604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10679824 + 396129409 = 3268^2 + 19903^2 .

It is a cyclic number.

It is not a de Polignac number, because 406809233 - 2² = 406809229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406809193 and 406809202.

It is not an unprimeable number, because it can be changed into a prime (406809239) 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, 122618 + ... + 125891.

It is an arithmetic number, because the mean of its divisors is an integer number (101764845).

Almost surely, 2^406809233 is an apocalyptic number.

It is an amenable number.

406809233 is a deficient number, since it is larger than the sum of its proper divisors (250147).

406809233 is a wasteful number, since it uses less digits than its factorization.

406809233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250146.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 406809233 is about 20169.5124631212. The cubic root of 406809233 is about 740.9637024235.

The spelling of 406809233 in words is "four hundred six million, eight hundred nine thousand, two hundred thirty-three".