802865921 has 8 divisors (see below), whose sum is σ = 943227264. Its totient is φ = 673733520.

The previous prime is 802865909. The next prime is 802865929. The reversal of 802865921 is 129568208.

802865921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 802865921 - 2¹⁸ = 802603777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802865929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807081 + ... + 2807366.

It is an arithmetic number, because the mean of its divisors is an integer number (117903408).

Almost surely, 2^802865921 is an apocalyptic number.

It is an amenable number.

802865921 is a deficient number, since it is larger than the sum of its proper divisors (140361343).

802865921 is a wasteful number, since it uses less digits than its factorization.

802865921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614471.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 802865921 is about 28334.8887592664. Note that the first 3 decimals coincide. The cubic root of 802865921 is about 929.4249811870.

The spelling of 802865921 in words is "eight hundred two million, eight hundred sixty-five thousand, nine hundred twenty-one".