800947801 has 4 divisors (see below), whose sum is σ = 801133312. Its totient is φ = 800762292.

The previous prime is 800947787. The next prime is 800947813. The reversal of 800947801 is 108749008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 800947801 - 2¹³ = 800939609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800947841) 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, 86121 + ... + 94966.

It is an arithmetic number, because the mean of its divisors is an integer number (200283328).

Almost surely, 2^800947801 is an apocalyptic number.

It is an amenable number.

800947801 is a deficient number, since it is larger than the sum of its proper divisors (185511).

800947801 is a wasteful number, since it uses less digits than its factorization.

800947801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185510.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 800947801 is about 28301.0212006563. The cubic root of 800947801 is about 928.6842305826.

The spelling of 800947801 in words is "eight hundred million, nine hundred forty-seven thousand, eight hundred one".