3940637969687 has 8 divisors (see below), whose sum is σ = 4179476369376. Its totient is φ = 3702581366272.

The previous prime is 3940637969659. The next prime is 3940637969693. The reversal of 3940637969687 is 7869697360493.

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 3940637969687 - 2²⁴ = 3940621192471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940637969647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195438683 + ... + 195458844.

It is an arithmetic number, because the mean of its divisors is an integer number (522434546172).

Almost surely, 2^{3940637969687} is an apocalyptic number.

3940637969687 is a deficient number, since it is larger than the sum of its proper divisors (238838399689).

3940637969687 is a wasteful number, since it uses less digits than its factorization.

3940637969687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390898137.

The product of its (nonzero) digits is 2222131968, while the sum is 77.

The spelling of 3940637969687 in words is "three trillion, nine hundred forty billion, six hundred thirty-seven million, nine hundred sixty-nine thousand, six hundred eighty-seven".