947838 has 16 divisors (see below), whose sum is σ = 1942416. Its totient is φ = 308160.

The previous prime is 947833. The next prime is 947851. The reversal of 947838 is 838749.

947838 is nontrivially palindromic in base 16.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 947796 and 947805.

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 947838.

It is not an unprimeable number, because it can be changed into a prime (947833) 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, 1681 + ... + 2172.

It is an arithmetic number, because the mean of its divisors is an integer number (121401).

2⁹⁴⁷⁸³⁸ is an apocalyptic number.

947838 is an abundant number, since it is smaller than the sum of its proper divisors (994578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

947838 is a wasteful number, since it uses less digits than its factorization.

947838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899.

The product of its digits is 48384, while the sum is 39.

The square root of 947838 is about 973.5697201536. The cubic root of 947838 is about 98.2301269623.

The spelling of 947838 in words is "nine hundred forty-seven thousand, eight hundred thirty-eight".