804089161 has 4 divisors (see below), whose sum is σ = 807631632. Its totient is φ = 800546692.

The previous prime is 804089149. The next prime is 804089189. The reversal of 804089161 is 161980408.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804089161 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 804089161.

It is not an unprimeable number, because it can be changed into a prime (804089141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770895 + ... + 1771348.

It is an arithmetic number, because the mean of its divisors is an integer number (201907908).

Almost surely, 2^804089161 is an apocalyptic number.

It is an amenable number.

804089161 is a deficient number, since it is larger than the sum of its proper divisors (3542471).

804089161 is a wasteful number, since it uses less digits than its factorization.

804089161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542470.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 804089161 is about 28356.4659469406. The cubic root of 804089161 is about 929.8967631193.

The spelling of 804089161 in words is "eight hundred four million, eighty-nine thousand, one hundred sixty-one".