804639189 has 32 divisors (see below), whose sum is σ = 1202688000. Its totient is φ = 475524864.

The previous prime is 804639181. The next prime is 804639239. The reversal of 804639189 is 981936408.

It is not a de Polignac number, because 804639189 - 2³ = 804639181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804639181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171132 + ... + 175770.

It is an arithmetic number, because the mean of its divisors is an integer number (37584000).

Almost surely, 2^804639189 is an apocalyptic number.

It is an amenable number.

804639189 is a deficient number, since it is larger than the sum of its proper divisors (398048811).

804639189 is a wasteful number, since it uses less digits than its factorization.

804639189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 804639189 is about 28366.1627471888. The cubic root of 804639189 is about 930.1087432099.

The spelling of 804639189 in words is "eight hundred four million, six hundred thirty-nine thousand, one hundred eighty-nine".