800888961 has 4 divisors (see below), whose sum is σ = 1067851952. Its totient is φ = 533925972.

The previous prime is 800888953. The next prime is 800888971. The reversal of 800888961 is 169888008.

800888961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 800888961 - 2³ = 800888953 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 800888961.

It is not an unprimeable number, because it can be changed into a prime (800888971) 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, 133481491 + ... + 133481496.

It is an arithmetic number, because the mean of its divisors is an integer number (266962988).

Almost surely, 2^800888961 is an apocalyptic number.

It is an amenable number.

800888961 is a deficient number, since it is larger than the sum of its proper divisors (266962991).

800888961 is a wasteful number, since it uses less digits than its factorization.

800888961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266962990.

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 800888961 is about 28299.9816431036. The cubic root of 800888961 is about 928.6614887268.

It can be divided in two parts, 8008 and 88961, that added together give a palindrome (96969).

The spelling of 800888961 in words is "eight hundred million, eight hundred eighty-eight thousand, nine hundred sixty-one".