3986707776437 has 4 divisors (see below), whose sum is σ = 3989188616736. Its totient is φ = 3984226936140.

The previous prime is 3986707776371. The next prime is 3986707776439. The reversal of 3986707776437 is 7346777076893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3986707776437 - 2²² = 3986703582133 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 (3986707776439) 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 3 ways as a sum of consecutive naturals, for example, 1240417739 + ... + 1240420952.

It is an arithmetic number, because the mean of its divisors is an integer number (997297154184).

Almost surely, 2^{3986707776437} is an apocalyptic number.

It is an amenable number.

3986707776437 is a deficient number, since it is larger than the sum of its proper divisors (2480840299).

3986707776437 is a wasteful number, since it uses less digits than its factorization.

3986707776437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480840298.

The product of its (nonzero) digits is 1568294784, while the sum is 74.

The spelling of 3986707776437 in words is "three trillion, nine hundred eighty-six billion, seven hundred seven million, seven hundred seventy-six thousand, four hundred thirty-seven".