1004809 has 8 divisors (see below), whose sum is σ = 1111880. Its totient is φ = 902016.

The previous prime is 1004797. The next prime is 1004873. The reversal of 1004809 is 9084001.

1004809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 360000 + 644809 = 600^2 + 803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1004809 - 2¹³ = 996617 is a prime.

It is a super-2 number, since 2×1004809² = 2019282252962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1004809.

It is not an unprimeable number, because it can be changed into a prime (1004209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (138985).

2^1004809 is an apocalyptic number.

It is an amenable number.

1004809 is a deficient number, since it is larger than the sum of its proper divisors (107071).

1004809 is a wasteful number, since it uses less digits than its factorization.

1004809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1004809 is about 1002.4016161200. The cubic root of 1004809 is about 100.1600437234.

It can be divided in two parts, 100480 and 9, that added together give a square (100489 = 317²).

The spelling of 1004809 in words is "one million, four thousand, eight hundred nine".