805438 has 8 divisors (see below), whose sum is σ = 1213632. Its totient is φ = 400896.

The previous prime is 805421. The next prime is 805451. The reversal of 805438 is 834508.

805438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

805438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270 + ... + 1297.

It is an arithmetic number, because the mean of its divisors is an integer number (151704).

2⁸⁰⁵⁴³⁸ is an apocalyptic number.

805438 is a deficient number, since it is larger than the sum of its proper divisors (408194).

805438 is a wasteful number, since it uses less digits than its factorization.

805438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 805438 is about 897.4619769104. The cubic root of 805438 is about 93.0416431995.

The spelling of 805438 in words is "eight hundred five thousand, four hundred thirty-eight".