1027439 has 4 divisors (see below), whose sum is σ = 1174224. Its totient is φ = 880656.

The previous prime is 1027427. The next prime is 1027459. The reversal of 1027439 is 9347201.

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

It is a de Polignac number, because none of the positive numbers 2^k-1027439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73382 + ... + 73395.

It is an arithmetic number, because the mean of its divisors is an integer number (293556).

2^1027439 is an apocalyptic number.

1027439 is a deficient number, since it is larger than the sum of its proper divisors (146785).

1027439 is an equidigital number, since it uses as much as digits as its factorization.

1027439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146784.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1027439 is about 1013.6266571080. The cubic root of 1027439 is about 100.9063930286.

The spelling of 1027439 in words is "one million, twenty-seven thousand, four hundred thirty-nine".