1019009 has 4 divisors (see below), whose sum is σ = 1026480. Its totient is φ = 1011540.

The previous prime is 1018999. The next prime is 1019023. The reversal of 1019009 is 9009101.

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 a cyclic number.

It is not a de Polignac number, because 1019009 - 2⁴ = 1018993 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 (1019059) 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, 3527 + ... + 3804.

It is an arithmetic number, because the mean of its divisors is an integer number (256620).

2^1019009 is an apocalyptic number.

It is an amenable number.

1019009 is a deficient number, since it is larger than the sum of its proper divisors (7471).

1019009 is an equidigital number, since it uses as much as digits as its factorization.

1019009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 1019009 is about 1009.4597565034. The cubic root of 1019009 is about 100.6296602911.

It can be divided in two parts, 101 and 9009, that multiplied together give a palindrome (909909).

The spelling of 1019009 in words is "one million, nineteen thousand, nine".