803840965 has 4 divisors (see below), whose sum is σ = 964609164. Its totient is φ = 643072768.

The previous prime is 803840963. The next prime is 803840977. The reversal of 803840965 is 569048308.

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 83777409 + 720063556 = 9153^2 + 26834^2 .

It is a cyclic number.

It is not a de Polignac number, because 803840965 - 2¹ = 803840963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803840963) 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, 80384092 + ... + 80384101.

It is an arithmetic number, because the mean of its divisors is an integer number (241152291).

Almost surely, 2^803840965 is an apocalyptic number.

It is an amenable number.

803840965 is a deficient number, since it is larger than the sum of its proper divisors (160768199).

803840965 is a wasteful number, since it uses less digits than its factorization.

803840965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160768198.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 803840965 is about 28352.0892528223. The cubic root of 803840965 is about 929.8010770442.

The spelling of 803840965 in words is "eight hundred three million, eight hundred forty thousand, nine hundred sixty-five".