3867961 has 2 divisors, whose sum is σ = 3867962. Its totient is φ = 3867960.

The previous prime is 3867947. The next prime is 3868003. The reversal of 3867961 is 1697683.

3867961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3825936 + 42025 = 1956^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3867961 - 2¹¹ = 3865913 is a prime.

It is a super-2 number, since 2×3867961² = 29922244595042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3867911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933980 + 1933981.

It is an arithmetic number, because the mean of its divisors is an integer number (1933981).

Almost surely, 2^3867961 is an apocalyptic number.

It is an amenable number.

3867961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3867961 is an equidigital number, since it uses as much as digits as its factorization.

3867961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 3867961 is about 1966.7132480359. The cubic root of 3867961 is about 156.9738688304.

The spelling of 3867961 in words is "three million, eight hundred sixty-seven thousand, nine hundred sixty-one".