220240439 has 4 divisors (see below), whose sum is σ = 223851000. Its totient is φ = 216629880.

The previous prime is 220240429. The next prime is 220240441. The reversal of 220240439 is 934042022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220240439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220240409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805189 + ... + 1805310.

It is an arithmetic number, because the mean of its divisors is an integer number (55962750).

Almost surely, 2^220240439 is an apocalyptic number.

220240439 is a deficient number, since it is larger than the sum of its proper divisors (3610561).

220240439 is an equidigital number, since it uses as much as digits as its factorization.

220240439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610560.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 220240439 is about 14840.4999578855. The cubic root of 220240439 is about 603.9009155403.

The spelling of 220240439 in words is "two hundred twenty million, two hundred forty thousand, four hundred thirty-nine".