220287149 has 2 divisors, whose sum is σ = 220287150. Its totient is φ = 220287148.

The previous prime is 220287143. The next prime is 220287157. The reversal of 220287149 is 941782022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219573124 + 714025 = 14818^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 220287149 - 2²⁰ = 219238573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220287143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110143574 + 110143575.

It is an arithmetic number, because the mean of its divisors is an integer number (110143575).

Almost surely, 2^220287149 is an apocalyptic number.

It is an amenable number.

220287149 is a deficient number, since it is larger than the sum of its proper divisors (1).

220287149 is an equidigital number, since it uses as much as digits as its factorization.

220287149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 220287149 is about 14842.0736084955. The cubic root of 220287149 is about 603.9436055778.

The spelling of 220287149 in words is "two hundred twenty million, two hundred eighty-seven thousand, one hundred forty-nine".