3958531 has 2 divisors, whose sum is σ = 3958532. Its totient is φ = 3958530.

The previous prime is 3958523. The next prime is 3958543. The reversal of 3958531 is 1358593.

3958531 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 a cyclic number.

It is not a de Polignac number, because 3958531 - 2³ = 3958523 is a prime.

It is a super-2 number, since 2×3958531² = 31339935355922, which contains 22 as substring.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (3958831) 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, 1979265 + 1979266.

It is an arithmetic number, because the mean of its divisors is an integer number (1979266).

Almost surely, 2^3958531 is an apocalyptic number.

3958531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3958531 is an equidigital number, since it uses as much as digits as its factorization.

3958531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 3958531 is about 1989.6057398389. The cubic root of 3958531 is about 158.1896323764.

It can be divided in two parts, 3958 and 531, that added together give a square (4489 = 67²).

The spelling of 3958531 in words is "three million, nine hundred fifty-eight thousand, five hundred thirty-one".