1439089 has 2 divisors, whose sum is σ = 1439090. Its totient is φ = 1439088.

The previous prime is 1439077. The next prime is 1439107. The reversal of 1439089 is 9809341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1420864 + 18225 = 1192^2 + 135^2 .

It is an emirp because it is prime and its reverse (9809341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1439089 - 2⁷ = 1438961 is a prime.

1439089 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1439989) by changing a digit.

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 as a sum of consecutive naturals, namely, 719544 + 719545.

It is an arithmetic number, because the mean of its divisors is an integer number (719545).

2^1439089 is an apocalyptic number.

It is an amenable number.

1439089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439089 is an equidigital number, since it uses as much as digits as its factorization.

1439089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1439089 is about 1199.6203566129. The cubic root of 1439089 is about 112.9005050027.

The spelling of 1439089 in words is "one million, four hundred thirty-nine thousand, eighty-nine".