439697 has 2 divisors, whose sum is σ = 439698. Its totient is φ = 439696.

The previous prime is 439693. The next prime is 439709. The reversal of 439697 is 796934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421201 + 18496 = 649^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 439697 - 2² = 439693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 439697.

It is not a weakly prime, because it can be changed into another prime (439693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219848 + 219849.

It is an arithmetic number, because the mean of its divisors is an integer number (219849).

2⁴³⁹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

439697 is a deficient number, since it is larger than the sum of its proper divisors (1).

439697 is an equidigital number, since it uses as much as digits as its factorization.

439697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 439697 is about 663.0965238938. The cubic root of 439697 is about 76.0415861970.

The spelling of 439697 in words is "four hundred thirty-nine thousand, six hundred ninety-seven".