3977146987 has 8 divisors (see below), whose sum is σ = 4339246320. Its totient is φ = 3615137760.

The previous prime is 3977146981. The next prime is 3977147021. The reversal of 3977146987 is 7896417793.

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 3977146987 - 2¹¹ = 3977144939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3977146981) 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, 97689 + ... + 132277.

It is an arithmetic number, because the mean of its divisors is an integer number (542405790).

Almost surely, 2^3977146987 is an apocalyptic number.

3977146987 is a deficient number, since it is larger than the sum of its proper divisors (362099333).

3977146987 is a wasteful number, since it uses less digits than its factorization.

3977146987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45053.

The product of its digits is 16003008, while the sum is 61.

The square root of 3977146987 is about 63064.6254805339. The cubic root of 3977146987 is about 1584.3722016879.

The spelling of 3977146987 in words is "three billion, nine hundred seventy-seven million, one hundred forty-six thousand, nine hundred eighty-seven".