1439255 has 4 divisors (see below), whose sum is σ = 1727112. Its totient is φ = 1151400.

The previous prime is 1439239. The next prime is 1439261. The reversal of 1439255 is 5529341.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1439255 - 2⁴ = 1439239 is a prime.

It is a d-powerful number, because it can be written as 1 + 4² + 3 + 9 + 2²⁰ + 5² + 5⁸ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143921 + ... + 143930.

It is an arithmetic number, because the mean of its divisors is an integer number (431778).

2^1439255 is an apocalyptic number.

1439255 is a deficient number, since it is larger than the sum of its proper divisors (287857).

1439255 is an equidigital number, since it uses as much as digits as its factorization.

1439255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287856.

The product of its digits is 5400, while the sum is 29.

The square root of 1439255 is about 1199.6895431736. The cubic root of 1439255 is about 112.9048458885.

The spelling of 1439255 in words is "one million, four hundred thirty-nine thousand, two hundred fifty-five".