805412 has 12 divisors (see below), whose sum is σ = 1416576. Its totient is φ = 400680.

The previous prime is 805403. The next prime is 805421. The reversal of 805412 is 214508.

It is an interprime number because it is at equal distance from previous prime (805403) and next prime (805421).

It is a plaindrome in base 13.

It is an unprimeable number.

805412 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (118048).

2⁸⁰⁵⁴¹² is an apocalyptic number.

It is an amenable number.

805412 is a deficient number, since it is larger than the sum of its proper divisors (611164).

805412 is a wasteful number, since it uses less digits than its factorization.

805412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 805412 is about 897.4474915002. The cubic root of 805412 is about 93.0406420429.

The spelling of 805412 in words is "eight hundred five thousand, four hundred twelve".