3891006239999 has 8 divisors (see below), whose sum is σ = 3940544894832. Its totient is φ = 3841530896320.

The previous prime is 3891006239971. The next prime is 3891006240031. The reversal of 3891006239999 is 9999326001983.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3891006239999 is a prime.

It is a super-2 number, since 2×3891006239999² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891006239969) 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, 15704084 + ... + 15949929.

It is an arithmetic number, because the mean of its divisors is an integer number (492568111854).

Almost surely, 2^{3891006239999} is an apocalyptic number.

3891006239999 is a deficient number, since it is larger than the sum of its proper divisors (49538654833).

3891006239999 is a wasteful number, since it uses less digits than its factorization.

3891006239999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31655577.

The product of its (nonzero) digits is 51018336, while the sum is 68.

The spelling of 3891006239999 in words is "three trillion, eight hundred ninety-one billion, six million, two hundred thirty-nine thousand, nine hundred ninety-nine".