8439504009 has 8 divisors (see below), whose sum is σ = 11296457760. Its totient is φ = 5604443136.

The previous prime is 8439503977. The next prime is 8439504013. The reversal of 8439504009 is 9004059348.

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

It is not a de Polignac number, because 8439504009 - 2⁵ = 8439503977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8439504809) 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, 5472319 + ... + 5473860.

It is an arithmetic number, because the mean of its divisors is an integer number (1412057220).

Almost surely, 2^8439504009 is an apocalyptic number.

It is an amenable number.

8439504009 is a deficient number, since it is larger than the sum of its proper divisors (2856953751).

8439504009 is a wasteful number, since it uses less digits than its factorization.

8439504009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10946439.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 8439504009 is about 91866.7731500350. The cubic root of 8439504009 is about 2035.9743764973.

The spelling of 8439504009 in words is "eight billion, four hundred thirty-nine million, five hundred four thousand, nine".