3917989677 has 144 divisors (see below), whose sum is σ = 7017544512. Its totient is φ = 1930521600.

The previous prime is 3917989657. The next prime is 3917989687. The reversal of 3917989677 is 7769897193.

It is not a de Polignac number, because 3917989677 - 2⁷ = 3917989549 is a prime.

Its product of digits (36006768) is a multiple of the sum of its prime factors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3917989657) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 38791927 + ... + 38792027.

It is an arithmetic number, because the mean of its divisors is an integer number (48732948).

Almost surely, 2^3917989677 is an apocalyptic number.

It is an amenable number.

3917989677 is a deficient number, since it is larger than the sum of its proper divisors (3099554835).

3917989677 is a wasteful number, since it uses less digits than its factorization.

3917989677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 190 counting only the distinct ones).

The product of its digits is 36006768, while the sum is 66.

The square root of 3917989677 is about 62593.8469579878. The cubic root of 3917989677 is about 1576.4774481960.

The spelling of 3917989677 in words is "three billion, nine hundred seventeen million, nine hundred eighty-nine thousand, six hundred seventy-seven".