3938531 has 2 divisors, whose sum is σ = 3938532. Its totient is φ = 3938530.

The previous prime is 3938527. The next prime is 3938549. The reversal of 3938531 is 1358393.

3938531 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 is an emirp because it is prime and its reverse (1358393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3938531 - 2² = 3938527 is a prime.

It is a super-2 number, since 2×3938531² = 31024052875922, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (3938521) 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, 1969265 + 1969266.

It is an arithmetic number, because the mean of its divisors is an integer number (1969266).

Almost surely, 2^3938531 is an apocalyptic number.

3938531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3938531 is an equidigital number, since it uses as much as digits as its factorization.

3938531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 3938531 is about 1984.5732538760. The cubic root of 3938531 is about 157.9227711021.

The spelling of 3938531 in words is "three million, nine hundred thirty-eight thousand, five hundred thirty-one".