1230439 has 6 divisors (see below), whose sum is σ = 1431384. Its totient is φ = 1054620.

The previous prime is 1230433. The next prime is 1230461. The reversal of 1230439 is 9340321.

It is not a de Polignac number, because 1230439 - 2⁷ = 1230311 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 (1230433) 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 in 5 ways as a sum of consecutive naturals, for example, 12507 + ... + 12604.

It is an arithmetic number, because the mean of its divisors is an integer number (238564).

2^1230439 is an apocalyptic number.

1230439 is a deficient number, since it is larger than the sum of its proper divisors (200945).

1230439 is an equidigital number, since it uses as much as digits as its factorization.

1230439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25125 (or 25118 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1230439 is about 1109.2515494693. The cubic root of 1230439 is about 107.1568724100.

The spelling of 1230439 in words is "one million, two hundred thirty thousand, four hundred thirty-nine".