220345439 has 4 divisors (see below), whose sum is σ = 225719760. Its totient is φ = 214971120.

The previous prime is 220345423. The next prime is 220345453. The reversal of 220345439 is 934543022.

220345439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 220345439 - 2⁴ = 220345423 is a prime.

It is a super-2 number, since 2×220345439² = 97104224976205442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220345409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2687099 + ... + 2687180.

It is an arithmetic number, because the mean of its divisors is an integer number (56429940).

Almost surely, 2^220345439 is an apocalyptic number.

220345439 is a deficient number, since it is larger than the sum of its proper divisors (5374321).

220345439 is an equidigital number, since it uses as much as digits as its factorization.

220345439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374320.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 220345439 is about 14844.0371530120. The cubic root of 220345439 is about 603.9968705523.

The spelling of 220345439 in words is "two hundred twenty million, three hundred forty-five thousand, four hundred thirty-nine".