804906290 has 8 divisors (see below), whose sum is σ = 1448831340. Its totient is φ = 321962512.

The previous prime is 804906247. The next prime is 804906317. The reversal of 804906290 is 92609408.

It can be written as a sum of positive squares in 2 ways, for example, as 754765729 + 50140561 = 27473^2 + 7081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 40245305 + ... + 40245324.

Almost surely, 2^804906290 is an apocalyptic number.

804906290 is a deficient number, since it is larger than the sum of its proper divisors (643925050).

804906290 is a wasteful number, since it uses less digits than its factorization.

804906290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80490636.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 804906290 is about 28370.8704484018. The cubic root of 804906290 is about 930.2116487501.

The spelling of 804906290 in words is "eight hundred four million, nine hundred six thousand, two hundred ninety".