805150823 has 4 divisors (see below), whose sum is σ = 809805048. Its totient is φ = 800496600.

The previous prime is 805150813. The next prime is 805150831. The reversal of 805150823 is 328051508.

It is a happy number.

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 805150823 - 2²⁸ = 536715367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 805150823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805150813) 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, 2326853 + ... + 2327198.

It is an arithmetic number, because the mean of its divisors is an integer number (202451262).

Almost surely, 2^805150823 is an apocalyptic number.

805150823 is a deficient number, since it is larger than the sum of its proper divisors (4654225).

805150823 is a wasteful number, since it uses less digits than its factorization.

805150823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654224.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 805150823 is about 28375.1796998715. The cubic root of 805150823 is about 930.3058395964.

The spelling of 805150823 in words is "eight hundred five million, one hundred fifty thousand, eight hundred twenty-three".