3958831 has 2 divisors, whose sum is σ = 3958832. Its totient is φ = 3958830.

The previous prime is 3958817. The next prime is 3958847. The reversal of 3958831 is 1388593.

It is a weak prime.

It is an emirp because it is prime and its reverse (1388593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3958831 - 2¹¹ = 3956783 is a prime.

It is a super-2 number, since 2×3958831² = 31344685773122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3958811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979415 + 1979416.

It is an arithmetic number, because the mean of its divisors is an integer number (1979416).

Almost surely, 2^3958831 is an apocalyptic number.

3958831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3958831 is an equidigital number, since it uses as much as digits as its factorization.

3958831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 3958831 is about 1989.6811302317. The cubic root of 3958831 is about 158.1936284456.

The spelling of 3958831 in words is "three million, nine hundred fifty-eight thousand, eight hundred thirty-one".