1026439 has 2 divisors, whose sum is σ = 1026440. Its totient is φ = 1026438.

The previous prime is 1026427. The next prime is 1026449. The reversal of 1026439 is 9346201.

It is a strong prime.

It is an emirp because it is prime and its reverse (9346201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1026439 - 2⁵ = 1026407 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513219 + 513220.

It is an arithmetic number, because the mean of its divisors is an integer number (513220).

2^1026439 is an apocalyptic number.

1026439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026439 is an equidigital number, since it uses as much as digits as its factorization.

1026439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1026439 is about 1013.1332587572. The cubic root of 1026439 is about 100.8736452132.

The spelling of 1026439 in words is "one million, twenty-six thousand, four hundred thirty-nine".