3996977 has 2 divisors, whose sum is σ = 3996978. Its totient is φ = 3996976.

The previous prime is 3996961. The next prime is 3997001. The reversal of 3996977 is 7796993.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2062096 + 1934881 = 1436^2 + 1391^2 .

It is an emirp because it is prime and its reverse (7796993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3996977 - 2⁴ = 3996961 is a prime.

It is not a weakly prime, because it can be changed into another prime (3996077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998488 + 1998489.

It is an arithmetic number, because the mean of its divisors is an integer number (1998489).

Almost surely, 2^3996977 is an apocalyptic number.

It is an amenable number.

3996977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996977 is an equidigital number, since it uses as much as digits as its factorization.

3996977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 50.

The square root of 3996977 is about 1999.2441071565. The cubic root of 3996977 is about 158.7001058405.

The spelling of 3996977 in words is "three million, nine hundred ninety-six thousand, nine hundred seventy-seven".