439014809 has 2 divisors, whose sum is σ = 439014810. Its totient is φ = 439014808.

The previous prime is 439014791. The next prime is 439014841. The reversal of 439014809 is 908410934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432764809 + 6250000 = 20803^2 + 2500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439014809 is a prime.

It is not a weakly prime, because it can be changed into another prime (439014859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219507404 + 219507405.

It is an arithmetic number, because the mean of its divisors is an integer number (219507405).

Almost surely, 2^439014809 is an apocalyptic number.

It is an amenable number.

439014809 is a deficient number, since it is larger than the sum of its proper divisors (1).

439014809 is an equidigital number, since it uses as much as digits as its factorization.

439014809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 439014809 is about 20952.6802342803. The cubic root of 439014809 is about 760.0223960390.

The spelling of 439014809 in words is "four hundred thirty-nine million, fourteen thousand, eight hundred nine".