1002004439 has 2 divisors, whose sum is σ = 1002004440. Its totient is φ = 1002004438.

The previous prime is 1002004417. The next prime is 1002004457. The reversal of 1002004439 is 9344002001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002004439 - 2²⁰ = 1000955863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002004639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501002219 + 501002220.

It is an arithmetic number, because the mean of its divisors is an integer number (501002220).

Almost surely, 2^1002004439 is an apocalyptic number.

1002004439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002004439 is an equidigital number, since it uses as much as digits as its factorization.

1002004439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1002004439 is about 31654.4536992822. The cubic root of 1002004439 is about 1000.6677004103.

The spelling of 1002004439 in words is "one billion, two million, four thousand, four hundred thirty-nine".