1004388673 has 4 divisors (see below), whose sum is σ = 1008699588. Its totient is φ = 1000077760.

The previous prime is 1004388661. The next prime is 1004388689. The reversal of 1004388673 is 3768834001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3768834001 = 509 ⋅7404389.

It can be written as a sum of positive squares in 2 ways, for example, as 610485264 + 393903409 = 24708^2 + 19847^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004388673 - 2⁵ = 1004388641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004388613) 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, 2155108 + ... + 2155573.

It is an arithmetic number, because the mean of its divisors is an integer number (252174897).

Almost surely, 2^1004388673 is an apocalyptic number.

It is an amenable number.

1004388673 is a deficient number, since it is larger than the sum of its proper divisors (4310915).

1004388673 is an equidigital number, since it uses as much as digits as its factorization.

1004388673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310914.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1004388673 is about 31692.0916476019. The cubic root of 1004388673 is about 1001.4607561525.

The spelling of 1004388673 in words is "one billion, four million, three hundred eighty-eight thousand, six hundred seventy-three".