220939 has 2 divisors, whose sum is σ = 220940. Its totient is φ = 220938.

The previous prime is 220933. The next prime is 220973. The reversal of 220939 is 939022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220939 - 2³ = 220931 is a prime.

It is not a weakly prime, because it can be changed into another prime (220931) 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 as a sum of consecutive naturals, namely, 110469 + 110470.

It is an arithmetic number, because the mean of its divisors is an integer number (110470).

2²²⁰⁹³⁹ is an apocalyptic number.

220939 is a deficient number, since it is larger than the sum of its proper divisors (1).

220939 is an equidigital number, since it uses as much as digits as its factorization.

220939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 220939 is about 470.0414875306. The cubic root of 220939 is about 60.4538728154.

The spelling of 220939 in words is "two hundred twenty thousand, nine hundred thirty-nine".