803989 has 2 divisors, whose sum is σ = 803990. Its totient is φ = 803988.

The previous prime is 803987. The next prime is 804007. The reversal of 803989 is 989308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756900 + 47089 = 870^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 803989 - 2¹ = 803987 is a prime.

Together with 803987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (803987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401994 + 401995.

It is an arithmetic number, because the mean of its divisors is an integer number (401995).

2⁸⁰³⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

803989 is a deficient number, since it is larger than the sum of its proper divisors (1).

803989 is an equidigital number, since it uses as much as digits as its factorization.

803989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 803989 is about 896.6543369660. The cubic root of 803989 is about 92.9858150794.

It can be divided in two parts, 8039 and 89, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 803989 in words is "eight hundred three thousand, nine hundred eighty-nine".