3936481 has 2 divisors, whose sum is σ = 3936482. Its totient is φ = 3936480.

The previous prime is 3936463. The next prime is 3936509. The reversal of 3936481 is 1846393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3936256 + 225 = 1984^2 + 15^2 .

It is an emirp because it is prime and its reverse (1846393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3936481 - 2⁷ = 3936353 is a prime.

It is a super-2 number, since 2×3936481² = 30991765326722, which contains 22 as substring.

It is an Ulam number.

3936481 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3936181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968240 + 1968241.

It is an arithmetic number, because the mean of its divisors is an integer number (1968241).

Almost surely, 2^3936481 is an apocalyptic number.

It is an amenable number.

3936481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3936481 is an equidigital number, since it uses as much as digits as its factorization.

3936481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 3936481 is about 1984.0567028187. The cubic root of 3936481 is about 157.8953668181.

The spelling of 3936481 in words is "three million, nine hundred thirty-six thousand, four hundred eighty-one".