1084409 has 4 divisors (see below), whose sum is σ = 1110900. Its totient is φ = 1057920.

The previous prime is 1084403. The next prime is 1084423. The reversal of 1084409 is 9044801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78400 + 1006009 = 280^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1084409 - 2¹⁶ = 1018873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1084403) 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 3 ways as a sum of consecutive naturals, for example, 13184 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (277725).

2^1084409 is an apocalyptic number.

It is an amenable number.

1084409 is a deficient number, since it is larger than the sum of its proper divisors (26491).

1084409 is an equidigital number, since it uses as much as digits as its factorization.

1084409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26490.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1084409 is about 1041.3496050799. The cubic root of 1084409 is about 102.7379836095.

The spelling of 1084409 in words is "one million, eighty-four thousand, four hundred nine".