947849 has 16 divisors (see below), whose sum is σ = 1148928. Its totient is φ = 765072.

The previous prime is 947833. The next prime is 947851. The reversal of 947849 is 948749.

It is not a de Polignac number, because 947849 - 2⁴ = 947833 is a prime.

It is a Duffinian number.

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 947849.

It is not an unprimeable number, because it can be changed into a prime (947819) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14114 + ... + 14180.

It is an arithmetic number, because the mean of its divisors is an integer number (71808).

2⁹⁴⁷⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

947849 is a deficient number, since it is larger than the sum of its proper divisors (201079).

947849 is a wasteful number, since it uses less digits than its factorization.

947849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164.

The product of its digits is 72576, while the sum is 41.

The square root of 947849 is about 973.5753694502. The cubic root of 947849 is about 98.2305069594.

Subtracting 947849 from its reverse (948749), we obtain a square (900 = 30²).

The spelling of 947849 in words is "nine hundred forty-seven thousand, eight hundred forty-nine".