804032491 has 4 divisors (see below), whose sum is σ = 804622032. Its totient is φ = 803442952.

The previous prime is 804032483. The next prime is 804032501. The reversal of 804032491 is 194230408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 804032491 - 2³ = 804032483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804032191) 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, 292720 + ... + 295453.

It is an arithmetic number, because the mean of its divisors is an integer number (201155508).

Almost surely, 2^804032491 is an apocalyptic number.

804032491 is a deficient number, since it is larger than the sum of its proper divisors (589541).

804032491 is a wasteful number, since it uses less digits than its factorization.

804032491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589540.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 804032491 is about 28355.4666863376. The cubic root of 804032491 is about 929.8749170811.

Adding to 804032491 its reverse (194230408), we get a palindrome (998262899).

The spelling of 804032491 in words is "eight hundred four million, thirty-two thousand, four hundred ninety-one".