219993244 has 6 divisors (see below), whose sum is σ = 384988184. Its totient is φ = 109996620.

The previous prime is 219993239. The next prime is 219993247. The reversal of 219993244 is 442399912.

It is a happy number.

219993244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 219993244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219993247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27499152 + ... + 27499159.

Almost surely, 2^219993244 is an apocalyptic number.

It is an amenable number.

219993244 is a deficient number, since it is larger than the sum of its proper divisors (164994940).

219993244 is a wasteful number, since it uses less digits than its factorization.

219993244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54998315 (or 54998313 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 219993244 is about 14832.1692277293. The cubic root of 219993244 is about 603.6748941175.

The spelling of 219993244 in words is "two hundred nineteen million, nine hundred ninety-three thousand, two hundred forty-four".