220406169 has 16 divisors (see below), whose sum is σ = 296976384. Its totient is φ = 145395600.

The previous prime is 220406167. The next prime is 220406183. The reversal of 220406169 is 961604022.

It is not a de Polignac number, because 220406169 - 2¹ = 220406167 is a prime.

It is a super-2 number, since 2×220406169² = 97157758666513122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220406167) 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, 119992 + ... + 121814.

It is an arithmetic number, because the mean of its divisors is an integer number (18561024).

Almost surely, 2^220406169 is an apocalyptic number.

It is an amenable number.

220406169 is a deficient number, since it is larger than the sum of its proper divisors (76570215).

220406169 is a wasteful number, since it uses less digits than its factorization.

220406169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 220406169 is about 14846.0826146159. The cubic root of 220406169 is about 604.0523551901.

The spelling of 220406169 in words is "two hundred twenty million, four hundred six thousand, one hundred sixty-nine".