919940 has 24 divisors (see below), whose sum is σ = 2208192. Its totient is φ = 315360.

The previous prime is 919939. The next prime is 919949. The reversal of 919940 is 49919.

It is a junction number, because it is equal to n+sod(n) for n = 919897 and 919906.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 919940.

It is not an unprimeable number, because it can be changed into a prime (919949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3146 + ... + 3425.

It is an arithmetic number, because the mean of its divisors is an integer number (92008).

2⁹¹⁹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

919940 is an abundant number, since it is smaller than the sum of its proper divisors (1288252).

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

919940 is a wasteful number, since it uses less digits than its factorization.

919940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587 (or 6585 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 919940 is about 959.1350269905. The cubic root of 919940 is about 97.2567682524.

The spelling of 919940 in words is "nine hundred nineteen thousand, nine hundred forty".