1043609 has 4 divisors (see below), whose sum is σ = 1192704. Its totient is φ = 894516.

The previous prime is 1043599. The next prime is 1043617. The reversal of 1043609 is 9063401.

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 1043609 - 2⁴ = 1043593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1043639) 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 in 3 ways as a sum of consecutive naturals, for example, 74537 + ... + 74550.

It is an arithmetic number, because the mean of its divisors is an integer number (298176).

2^1043609 is an apocalyptic number.

It is an amenable number.

1043609 is a deficient number, since it is larger than the sum of its proper divisors (149095).

1043609 is an equidigital number, since it uses as much as digits as its factorization.

1043609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149094.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1043609 is about 1021.5718281159. The cubic root of 1043609 is about 101.4330003450.

The spelling of 1043609 in words is "one million, forty-three thousand, six hundred nine".