220169249 has 2 divisors, whose sum is σ = 220169250. Its totient is φ = 220169248.

The previous prime is 220169233. The next prime is 220169263. The reversal of 220169249 is 942961022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184552225 + 35617024 = 13585^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 220169249 - 2⁴ = 220169233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220169269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110084624 + 110084625.

It is an arithmetic number, because the mean of its divisors is an integer number (110084625).

Almost surely, 2^220169249 is an apocalyptic number.

It is an amenable number.

220169249 is a deficient number, since it is larger than the sum of its proper divisors (1).

220169249 is an equidigital number, since it uses as much as digits as its factorization.

220169249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 220169249 is about 14838.1012599321. The cubic root of 220169249 is about 603.8358406924.

The spelling of 220169249 in words is "two hundred twenty million, one hundred sixty-nine thousand, two hundred forty-nine".