802109 has 12 divisors (see below), whose sum is σ = 1008672. Its totient is φ = 624360.

The previous prime is 802103. The next prime is 802121. The reversal of 802109 is 901208.

It is a de Polignac number, because none of the positive numbers 2^k-802109 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 802109.

It is not an unprimeable number, because it can be changed into a prime (802103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374 + ... + 1320.

It is an arithmetic number, because the mean of its divisors is an integer number (84056).

2⁸⁰²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

802109 is a deficient number, since it is larger than the sum of its proper divisors (206563).

802109 is a wasteful number, since it uses less digits than its factorization.

802109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 802109 is about 895.6053818507. The cubic root of 802109 is about 92.9132810160.

Subtracting 802109 from its reverse (901208), we obtain a palindrome (99099).

The spelling of 802109 in words is "eight hundred two thousand, one hundred nine".