219940 has 24 divisors (see below), whose sum is σ = 528192. Its totient is φ = 75360.

The previous prime is 219937. The next prime is 219941. The reversal of 219940 is 49912.

219940 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (219941) 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, 646 + ... + 925.

It is an arithmetic number, because the mean of its divisors is an integer number (22008).

2²¹⁹⁹⁴⁰ is an apocalyptic number.

219940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219940 is an abundant number, since it is smaller than the sum of its proper divisors (308252).

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

219940 is a wasteful number, since it uses less digits than its factorization.

219940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 219940 is about 468.9776114059. The cubic root of 219940 is about 60.3626188592.

The spelling of 219940 in words is "two hundred nineteen thousand, nine hundred forty".