220842869 has 16 divisors (see below), whose sum is σ = 252665280. Its totient is φ = 191220480.

The previous prime is 220842781. The next prime is 220842877. The reversal of 220842869 is 968248022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220842869 is a prime.

It is a super-2 number, since 2×220842869² = 97543145576302322, 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 (220842889) 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, 71642 + ... + 74660.

It is an arithmetic number, because the mean of its divisors is an integer number (15791580).

Almost surely, 2^220842869 is an apocalyptic number.

It is an amenable number.

220842869 is a deficient number, since it is larger than the sum of its proper divisors (31822411).

220842869 is a wasteful number, since it uses less digits than its factorization.

220842869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 220842869 is about 14860.7829201560. The cubic root of 220842869 is about 604.4510367651.

The spelling of 220842869 in words is "two hundred twenty million, eight hundred forty-two thousand, eight hundred sixty-nine".