405572873 has 8 divisors (see below), whose sum is σ = 420662280. Its totient is φ = 390700800.

The previous prime is 405572857. The next prime is 405572929. The reversal of 405572873 is 378275504.

It can be written as a sum of positive squares in 4 ways, for example, as 347934409 + 57638464 = 18653^2 + 7592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405572873 - 2⁴ = 405572857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405572873.

It is not an unprimeable number, because it can be changed into a prime (405572833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50528 + ... + 58001.

It is an arithmetic number, because the mean of its divisors is an integer number (52582785).

Almost surely, 2^405572873 is an apocalyptic number.

It is an amenable number.

405572873 is a deficient number, since it is larger than the sum of its proper divisors (15089407).

405572873 is a wasteful number, since it uses less digits than its factorization.

405572873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108667.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 405572873 is about 20138.8399119711. The cubic root of 405572873 is about 740.2123039496.

The spelling of 405572873 in words is "four hundred five million, five hundred seventy-two thousand, eight hundred seventy-three".