804090907 has 4 divisors (see below), whose sum is σ = 804245400. Its totient is φ = 803936416.

The previous prime is 804090901. The next prime is 804090913. The reversal of 804090907 is 709090408.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (804090901) and next prime (804090913).

It is a cyclic number.

It is not a de Polignac number, because 804090907 - 2⁷ = 804090779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804090901) 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, 69157 + ... + 79942.

It is an arithmetic number, because the mean of its divisors is an integer number (201061350).

Almost surely, 2^804090907 is an apocalyptic number.

804090907 is a deficient number, since it is larger than the sum of its proper divisors (154493).

804090907 is a wasteful number, since it uses less digits than its factorization.

804090907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154492.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 804090907 is about 28356.4967335530. The cubic root of 804090907 is about 929.8974361784.

The spelling of 804090907 in words is "eight hundred four million, ninety thousand, nine hundred seven".