3986577691 has 8 divisors (see below), whose sum is σ = 4171576464. Its totient is φ = 3805644960.

The previous prime is 3986577689. The next prime is 3986577709. The reversal of 3986577691 is 1967756893.

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 3986577691 - 2¹ = 3986577689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3986577391) 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, 1014505 + ... + 1018426.

It is an arithmetic number, because the mean of its divisors is an integer number (521447058).

Almost surely, 2^3986577691 is an apocalyptic number.

3986577691 is a deficient number, since it is larger than the sum of its proper divisors (184998773).

3986577691 is a wasteful number, since it uses less digits than its factorization.

3986577691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033021.

The product of its digits is 17146080, while the sum is 61.

The square root of 3986577691 is about 63139.3513666398. The cubic root of 3986577691 is about 1585.6235133082.

The spelling of 3986577691 in words is "three billion, nine hundred eighty-six million, five hundred seventy-seven thousand, six hundred ninety-one".