439949 has 2 divisors, whose sum is σ = 439950. Its totient is φ = 439948.

The previous prime is 439919. The next prime is 439961. The reversal of 439949 is 949934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 174724 = 515^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 439949 - 2⁸ = 439693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439919) 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, 219974 + 219975.

It is an arithmetic number, because the mean of its divisors is an integer number (219975).

2⁴³⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

439949 is a deficient number, since it is larger than the sum of its proper divisors (1).

439949 is an equidigital number, since it uses as much as digits as its factorization.

439949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 439949 is about 663.2865142606. The cubic root of 439949 is about 76.0561104566.

The spelling of 439949 in words is "four hundred thirty-nine thousand, nine hundred forty-nine".