219921448 has 16 divisors (see below), whose sum is σ = 417322080. Its totient is φ = 108635568.

The previous prime is 219921439. The next prime is 219921461. The reversal of 219921448 is 844129912.

219921448 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 219921448.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164940 + ... + 166267.

It is an arithmetic number, because the mean of its divisors is an integer number (26082630).

Almost surely, 2^219921448 is an apocalyptic number.

It is an amenable number.

219921448 is a deficient number, since it is larger than the sum of its proper divisors (197400632).

219921448 is a wasteful number, since it uses less digits than its factorization.

219921448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331296 (or 331292 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 219921448 is about 14829.7487504003. The cubic root of 219921448 is about 603.6092161029.

The spelling of 219921448 in words is "two hundred nineteen million, nine hundred twenty-one thousand, four hundred forty-eight".