439867 has 2 divisors, whose sum is σ = 439868. Its totient is φ = 439866.

The previous prime is 439861. The next prime is 439883. The reversal of 439867 is 768934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 439867 - 2¹¹ = 437819 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 3¹¹ + 8 + 9 + 6³ + 7³ .

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (439861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219933 + 219934.

It is an arithmetic number, because the mean of its divisors is an integer number (219934).

2⁴³⁹⁸⁶⁷ is an apocalyptic number.

439867 is a deficient number, since it is larger than the sum of its proper divisors (1).

439867 is an equidigital number, since it uses as much as digits as its factorization.

439867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 439867 is about 663.2246979720. The cubic root of 439867 is about 76.0513849175.

It can be divided in two parts, 4398 and 67, that added together give a triangular number (4465 = T₉₄).

The spelling of 439867 in words is "four hundred thirty-nine thousand, eight hundred sixty-seven".