439973 has 2 divisors, whose sum is σ = 439974. Its totient is φ = 439972.

The previous prime is 439969. The next prime is 439981. The reversal of 439973 is 379934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357604 + 82369 = 598^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 439973 - 2² = 439969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439903) 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, 219986 + 219987.

It is an arithmetic number, because the mean of its divisors is an integer number (219987).

2⁴³⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

439973 is a deficient number, since it is larger than the sum of its proper divisors (1).

439973 is an equidigital number, since it uses as much as digits as its factorization.

439973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 35.

The square root of 439973 is about 663.3046057431. The cubic root of 439973 is about 76.0574934301.

The spelling of 439973 in words is "four hundred thirty-nine thousand, nine hundred seventy-three".