3963977 has 2 divisors, whose sum is σ = 3963978. Its totient is φ = 3963976.

The previous prime is 3963959. The next prime is 3963979. The reversal of 3963977 is 7793693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2627641 + 1336336 = 1621^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 3963977 - 2⁸ = 3963721 is a prime.

It is a super-2 number, since 2×3963977² = 31426227313058, which contains 22 as substring.

Together with 3963979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3963979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1981988 + 1981989.

It is an arithmetic number, because the mean of its divisors is an integer number (1981989).

Almost surely, 2^3963977 is an apocalyptic number.

It is an amenable number.

3963977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3963977 is an equidigital number, since it uses as much as digits as its factorization.

3963977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 44.

The square root of 3963977 is about 1990.9738822998. The cubic root of 3963977 is about 158.2621429421.

The spelling of 3963977 in words is "three million, nine hundred sixty-three thousand, nine hundred seventy-seven".