220442869 has 4 divisors (see below), whose sum is σ = 220685760. Its totient is φ = 220199980.

The previous prime is 220442867. The next prime is 220442923. The reversal of 220442869 is 968244022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220442869 - 2¹ = 220442867 is a prime.

It is a super-2 number, since 2×220442869² = 97190116985902322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220442861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120079 + ... + 121900.

It is an arithmetic number, because the mean of its divisors is an integer number (55171440).

Almost surely, 2^220442869 is an apocalyptic number.

It is an amenable number.

220442869 is a deficient number, since it is larger than the sum of its proper divisors (242891).

220442869 is an equidigital number, since it uses as much as digits as its factorization.

220442869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242890.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 220442869 is about 14847.3185794607. The cubic root of 220442869 is about 604.0858804028.

It can be divided in two parts, 22044 and 2869, that multiplied together give a palindrome (63244236).

The spelling of 220442869 in words is "two hundred twenty million, four hundred forty-two thousand, eight hundred sixty-nine".