3967913 has 2 divisors, whose sum is σ = 3967914. Its totient is φ = 3967912.

The previous prime is 3967877. The next prime is 3967961. The reversal of 3967913 is 3197693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3810304 + 157609 = 1952^2 + 397^2 .

It is an emirp because it is prime and its reverse (3197693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3967913 - 2¹⁰ = 3966889 is a prime.

It is not a weakly prime, because it can be changed into another prime (3967963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983956 + 1983957.

It is an arithmetic number, because the mean of its divisors is an integer number (1983957).

Almost surely, 2^3967913 is an apocalyptic number.

It is an amenable number.

3967913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3967913 is an equidigital number, since it uses as much as digits as its factorization.

3967913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 38.

The square root of 3967913 is about 1991.9620980330. The cubic root of 3967913 is about 158.3145073338.

The spelling of 3967913 in words is "three million, nine hundred sixty-seven thousand, nine hundred thirteen".