439693 has 2 divisors, whose sum is σ = 439694. Its totient is φ = 439692.

The previous prime is 439687. The next prime is 439697. The reversal of 439693 is 396934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413449 + 26244 = 643^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 439693 - 2⁵ = 439661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439697) 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, 219846 + 219847.

It is an arithmetic number, because the mean of its divisors is an integer number (219847).

2⁴³⁹⁶⁹³ is an apocalyptic number.

It is an amenable number.

439693 is a deficient number, since it is larger than the sum of its proper divisors (1).

439693 is an equidigital number, since it uses as much as digits as its factorization.

439693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 439693 is about 663.0935077348. The cubic root of 439693 is about 76.0413556085.

It can be divided in two parts, 4396 and 93, that added together give a square (4489 = 67²).

The spelling of 439693 in words is "four hundred thirty-nine thousand, six hundred ninety-three".