947823 has 8 divisors (see below), whose sum is σ = 1271088. Its totient is φ = 628224.

The previous prime is 947819. The next prime is 947833. The reversal of 947823 is 328749.

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

It is not a de Polignac number, because 947823 - 2² = 947819 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (158886).

2⁹⁴⁷⁸²³ is an apocalyptic number.

947823 is a deficient number, since it is larger than the sum of its proper divisors (323265).

947823 is a wasteful number, since it uses less digits than its factorization.

947823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its digits is 12096, while the sum is 33.

The square root of 947823 is about 973.5620165146. The cubic root of 947823 is about 98.2296087796.

It can be divided in two parts, 947 and 823, that added together give a triangular number (1770 = T₅₉).

The spelling of 947823 in words is "nine hundred forty-seven thousand, eight hundred twenty-three".