1439609 has 4 divisors (see below), whose sum is σ = 1486080. Its totient is φ = 1393140.

The previous prime is 1439579. The next prime is 1439651. The reversal of 1439609 is 9069341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1439609 - 2¹⁶ = 1374073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1439699) 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, 23189 + ... + 23250.

It is an arithmetic number, because the mean of its divisors is an integer number (371520).

2^1439609 is an apocalyptic number.

It is an amenable number.

1439609 is a deficient number, since it is larger than the sum of its proper divisors (46471).

1439609 is an equidigital number, since it uses as much as digits as its factorization.

1439609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46470.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1439609 is about 1199.8370722727. The cubic root of 1439609 is about 112.9141018436.

Adding to 1439609 its product of nonzero digits (5832), we get a palindrome (1445441).

It can be divided in two parts, 1439 and 609, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1439609 in words is "one million, four hundred thirty-nine thousand, six hundred nine".