800041205 has 4 divisors (see below), whose sum is σ = 960049452. Its totient is φ = 640032960.

The previous prime is 800041153. The next prime is 800041259. The reversal of 800041205 is 502140008.

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 408080401 + 391960804 = 20201^2 + 19798^2 .

It is not a de Polignac number, because 800041205 - 2⁶ = 800041141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80004116 + ... + 80004125.

It is an arithmetic number, because the mean of its divisors is an integer number (240012363).

Almost surely, 2^800041205 is an apocalyptic number.

It is an amenable number.

800041205 is a deficient number, since it is larger than the sum of its proper divisors (160008247).

800041205 is a wasteful number, since it uses less digits than its factorization.

800041205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160008246.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 800041205 is about 28284.9996464557. Note that the first 3 decimals coincide. The cubic root of 800041205 is about 928.3337045046. Note that the first 3 decimals are identical.

Adding to 800041205 its sum of digits (20), we get a square (800041225 = 28285²).

The spelling of 800041205 in words is "eight hundred million, forty-one thousand, two hundred five".