220013869 has 2 divisors, whose sum is σ = 220013870. Its totient is φ = 220013868.

The previous prime is 220013819. The next prime is 220013873. The reversal of 220013869 is 968310022.

220013869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142802500 + 77211369 = 11950^2 + 8787^2 .

It is a cyclic number.

It is not a de Polignac number, because 220013869 - 2⁷ = 220013741 is a prime.

It is a super-2 number, since 2×220013869² = 96812205104698322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220013869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220013819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110006934 + 110006935.

It is an arithmetic number, because the mean of its divisors is an integer number (110006935).

Almost surely, 2^220013869 is an apocalyptic number.

It is an amenable number.

220013869 is a deficient number, since it is larger than the sum of its proper divisors (1).

220013869 is an equidigital number, since it uses as much as digits as its factorization.

220013869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 220013869 is about 14832.8644907179. The cubic root of 220013869 is about 603.6937589478.

The spelling of 220013869 in words is "two hundred twenty million, thirteen thousand, eight hundred sixty-nine".