840948 has 12 divisors (see below), whose sum is σ = 1962240. Its totient is φ = 280312.

The previous prime is 840943. The next prime is 840967. The reversal of 840948 is 849048.

It is a tau number, because it is divible by the number of its divisors (12).

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 840948.

It is not an unprimeable number, because it can be changed into a prime (840941) by changing a digit.

840948 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, 35028 + ... + 35051.

It is an arithmetic number, because the mean of its divisors is an integer number (163520).

2⁸⁴⁰⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

840948 is an abundant number, since it is smaller than the sum of its proper divisors (1121292).

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

840948 is a wasteful number, since it uses less digits than its factorization.

840948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70086 (or 70084 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 840948 is about 917.0321695557. The cubic root of 840948 is about 94.3893612927.

Subtracting 840948 from its reverse (849048), we obtain a square (8100 = 90²).

The spelling of 840948 in words is "eight hundred forty thousand, nine hundred forty-eight".