219984434 has 16 divisors (see below), whose sum is σ = 339315480. Its totient is φ = 106899840.

The previous prime is 219984419. The next prime is 219984473. The reversal of 219984434 is 434489912.

It can be written as a sum of positive squares in 4 ways, for example, as 36300625 + 183683809 = 6025^2 + 13553^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17072 + ... + 27044.

Almost surely, 2^219984434 is an apocalyptic number.

219984434 is a deficient number, since it is larger than the sum of its proper divisors (119331046).

219984434 is a wasteful number, since it uses less digits than its factorization.

219984434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10285.

The product of its digits is 248832, while the sum is 44.

The square root of 219984434 is about 14831.8722351563. The cubic root of 219984434 is about 603.6668356173. Note that the first 3 decimals are identical.

The spelling of 219984434 in words is "two hundred nineteen million, nine hundred eighty-four thousand, four hundred thirty-four".