405824473 has 4 divisors (see below), whose sum is σ = 416792740. Its totient is φ = 394856208.

The previous prime is 405824453. The next prime is 405824509. The reversal of 405824473 is 374428504.

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 382476249 + 23348224 = 19557^2 + 4832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405824473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 10968229 = 405824473 / (4 + 0 + 5 + 8 + 2 + 4 + 4 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405824453) 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, 5484078 + ... + 5484151.

It is an arithmetic number, because the mean of its divisors is an integer number (104198185).

Almost surely, 2^405824473 is an apocalyptic number.

It is an amenable number.

405824473 is a deficient number, since it is larger than the sum of its proper divisors (10968267).

405824473 is a wasteful number, since it uses less digits than its factorization.

405824473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10968266.

The product of its (nonzero) digits is 107520, while the sum is 37.

The square root of 405824473 is about 20145.0855793665. The cubic root of 405824473 is about 740.3653376213.

The spelling of 405824473 in words is "four hundred five million, eight hundred twenty-four thousand, four hundred seventy-three".