800040133 has 4 divisors (see below), whose sum is σ = 805879980. Its totient is φ = 794200288.

The previous prime is 800040127. The next prime is 800040149. The reversal of 800040133 is 331040008.

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 627853249 + 172186884 = 25057^2 + 13122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800040133 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 800040133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800047133) 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, 2919718 + ... + 2919991.

It is an arithmetic number, because the mean of its divisors is an integer number (201469995).

Almost surely, 2^800040133 is an apocalyptic number.

It is an amenable number.

800040133 is a deficient number, since it is larger than the sum of its proper divisors (5839847).

800040133 is a wasteful number, since it uses less digits than its factorization.

800040133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5839846.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 800040133 is about 28284.9806964756. The cubic root of 800040133 is about 928.3332898700. Note that the first 3 decimals are identical.

The spelling of 800040133 in words is "eight hundred million, forty thousand, one hundred thirty-three".