804238687 has 4 divisors (see below), whose sum is σ = 919129936. Its totient is φ = 689347440.

The previous prime is 804238681. The next prime is 804238691. The reversal of 804238687 is 786832408.

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 804238687 - 2⁷ = 804238559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804238681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57445614 + ... + 57445627.

It is an arithmetic number, because the mean of its divisors is an integer number (229782484).

Almost surely, 2^804238687 is an apocalyptic number.

804238687 is a deficient number, since it is larger than the sum of its proper divisors (114891249).

804238687 is a wasteful number, since it uses less digits than its factorization.

804238687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114891248.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 804238687 is about 28359.1023659071. The cubic root of 804238687 is about 929.9543998145.

The spelling of 804238687 in words is "eight hundred four million, two hundred thirty-eight thousand, six hundred eighty-seven".