220444807 has 16 divisors (see below), whose sum is σ = 246327552. Its totient is φ = 195592320.

The previous prime is 220444769. The next prime is 220444817. The reversal of 220444807 is 708444022.

220444807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220444807 - 2¹¹ = 220442759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220444817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81958 + ... + 84604.

It is an arithmetic number, because the mean of its divisors is an integer number (15395472).

Almost surely, 2^220444807 is an apocalyptic number.

220444807 is a deficient number, since it is larger than the sum of its proper divisors (25882745).

220444807 is a wasteful number, since it uses less digits than its factorization.

220444807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 220444807 is about 14847.3838436271. The cubic root of 220444807 is about 604.0876506498.

Adding to 220444807 its reverse (708444022), we get a palindrome (928888829).

The spelling of 220444807 in words is "two hundred twenty million, four hundred forty-four thousand, eight hundred seven".