3995977 has 2 divisors, whose sum is σ = 3995978. Its totient is φ = 3995976.

The previous prime is 3995941. The next prime is 3995989. The reversal of 3995977 is 7795993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2005056 + 1990921 = 1416^2 + 1411^2 .

It is an emirp because it is prime and its reverse (7795993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3995977 - 2¹⁵ = 3963209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3995977.

It is not a weakly prime, because it can be changed into another prime (3995777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997988 + 1997989.

It is an arithmetic number, because the mean of its divisors is an integer number (1997989).

Almost surely, 2^3995977 is an apocalyptic number.

It is an amenable number.

3995977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3995977 is an equidigital number, since it uses as much as digits as its factorization.

3995977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 535815, while the sum is 49.

The square root of 3995977 is about 1998.9939969895. The cubic root of 3995977 is about 158.6868697254.

The spelling of 3995977 in words is "three million, nine hundred ninety-five thousand, nine hundred seventy-seven".