219968849 has 8 divisors (see below), whose sum is σ = 231076800. Its totient is φ = 208989616.

The previous prime is 219968807. The next prime is 219968869. The reversal of 219968849 is 948869912.

219968849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219968849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219968794 and 219968803.

It is not an unprimeable number, because it can be changed into a prime (219968869) 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, 28667 + ... + 35520.

It is an arithmetic number, because the mean of its divisors is an integer number (28884600).

Almost surely, 2^219968849 is an apocalyptic number.

It is an amenable number.

219968849 is a deficient number, since it is larger than the sum of its proper divisors (11107951).

219968849 is a wasteful number, since it uses less digits than its factorization.

219968849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64359.

The product of its digits is 2239488, while the sum is 56.

The square root of 219968849 is about 14831.3468370206. The cubic root of 219968849 is about 603.6525795028.

The spelling of 219968849 in words is "two hundred nineteen million, nine hundred sixty-eight thousand, eight hundred forty-nine".