439961 has 2 divisors, whose sum is σ = 439962. Its totient is φ = 439960.

The previous prime is 439949. The next prime is 439969. The reversal of 439961 is 169934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337561 + 102400 = 581^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 439961 - 2¹⁰ = 438937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (439969) 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, 219980 + 219981.

It is an arithmetic number, because the mean of its divisors is an integer number (219981).

2⁴³⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

439961 is a deficient number, since it is larger than the sum of its proper divisors (1).

439961 is an equidigital number, since it uses as much as digits as its factorization.

439961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 439961 is about 663.2955600635. The cubic root of 439961 is about 76.0568019496.

The spelling of 439961 in words is "four hundred thirty-nine thousand, nine hundred sixty-one".