809427774 has 8 divisors (see below), whose sum is σ = 1618855560. Its totient is φ = 269809256.

The previous prime is 809427709. The next prime is 809427793. The reversal of 809427774 is 477724908.

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

809427774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67452309 + ... + 67452320.

It is an arithmetic number, because the mean of its divisors is an integer number (202356945).

Almost surely, 2^809427774 is an apocalyptic number.

809427774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809427774 is a wasteful number, since it uses less digits than its factorization.

809427774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134904634.

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 809427774 is about 28450.4441793094. Note that the first 3 decimals coincide. The cubic root of 809427774 is about 931.9501890587.

The spelling of 809427774 in words is "eight hundred nine million, four hundred twenty-seven thousand, seven hundred seventy-four".