3965977 has 4 divisors (see below), whose sum is σ = 3991396. Its totient is φ = 3940560.

The previous prime is 3965963. The next prime is 3966007. The reversal of 3965977 is 7795693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7795693 = 29 ⋅268817.

It can be written as a sum of positive squares in 2 ways, for example, as 811801 + 3154176 = 901^2 + 1776^2 .

It is a cyclic number.

It is not a de Polignac number, because 3965977 - 2⁷ = 3965849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3960977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12474 + ... + 12787.

It is an arithmetic number, because the mean of its divisors is an integer number (997849).

Almost surely, 2^3965977 is an apocalyptic number.

It is an amenable number.

3965977 is a deficient number, since it is larger than the sum of its proper divisors (25419).

3965977 is a wasteful number, since it uses less digits than its factorization.

3965977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25418.

The product of its digits is 357210, while the sum is 46.

The square root of 3965977 is about 1991.4760857213. The cubic root of 3965977 is about 158.2887551943.

The spelling of 3965977 in words is "three million, nine hundred sixty-five thousand, nine hundred seventy-seven".