219999140 has 24 divisors (see below), whose sum is σ = 482086080. Its totient is φ = 84173408.

The previous prime is 219999139. The next prime is 219999181. The reversal of 219999140 is 41999912.

It is a junction number, because it is equal to n+sod(n) for n = 219999091 and 219999100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238670 + ... + 239589.

It is an arithmetic number, because the mean of its divisors is an integer number (20086920).

Almost surely, 2^219999140 is an apocalyptic number.

219999140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219999140 is an abundant number, since it is smaller than the sum of its proper divisors (262086940).

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

219999140 is a wasteful number, since it uses less digits than its factorization.

219999140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478291 (or 478289 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 219999140 is about 14832.3679835689. The cubic root of 219999140 is about 603.6802870640.

The spelling of 219999140 in words is "two hundred nineteen million, nine hundred ninety-nine thousand, one hundred forty".