813854 has 8 divisors (see below), whose sum is σ = 1224720. Its totient is φ = 405616.

The previous prime is 813847. The next prime is 813863. The reversal of 813854 is 458318.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 813854.

It is an unprimeable number.

813854 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602 + ... + 1410.

It is an arithmetic number, because the mean of its divisors is an integer number (153090).

2⁸¹³⁸⁵⁴ is an apocalyptic number.

813854 is a deficient number, since it is larger than the sum of its proper divisors (410866).

813854 is a wasteful number, since it uses less digits than its factorization.

813854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314.

The product of its digits is 3840, while the sum is 29.

The square root of 813854 is about 902.1385702873. The cubic root of 813854 is about 93.3645842063.

It can be divided in two parts, 8138 and 54, that added together give a 13-th power (8192 = 2¹³).

The spelling of 813854 in words is "eight hundred thirteen thousand, eight hundred fifty-four".