220385539 has 4 divisors (see below), whose sum is σ = 240420600. Its totient is φ = 200350480.

The previous prime is 220385533. The next prime is 220385549. The reversal of 220385539 is 935583022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220385539 - 2⁵ = 220385507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220385498 and 220385507.

It is not an unprimeable number, because it can be changed into a prime (220385533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10017514 + ... + 10017535.

It is an arithmetic number, because the mean of its divisors is an integer number (60105150).

Almost surely, 2^220385539 is an apocalyptic number.

220385539 is a deficient number, since it is larger than the sum of its proper divisors (20035061).

220385539 is a wasteful number, since it uses less digits than its factorization.

220385539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20035060.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 220385539 is about 14845.3878022772. The cubic root of 220385539 is about 604.0335081844.

The spelling of 220385539 in words is "two hundred twenty million, three hundred eighty-five thousand, five hundred thirty-nine".