1384609 has 4 divisors (see below), whose sum is σ = 1398420. Its totient is φ = 1370800.

The previous prime is 1384601. The next prime is 1384613. The reversal of 1384609 is 9064831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9064831 = 853 ⋅10627.

It can be written as a sum of positive squares in 2 ways, for example, as 1272384 + 112225 = 1128^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1384609 - 2³ = 1384601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1384601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6754 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (349605).

2^1384609 is an apocalyptic number.

It is an amenable number.

1384609 is a deficient number, since it is larger than the sum of its proper divisors (13811).

1384609 is a wasteful number, since it uses less digits than its factorization.

1384609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13810.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1384609 is about 1176.6940978861. The cubic root of 1384609 is about 111.4574364812.

The spelling of 1384609 in words is "one million, three hundred eighty-four thousand, six hundred nine".