3958091 has 2 divisors, whose sum is σ = 3958092. Its totient is φ = 3958090.

The previous prime is 3958069. The next prime is 3958103. The reversal of 3958091 is 1908593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3958091 - 2¹⁸ = 3695947 is a prime.

It is not a weakly prime, because it can be changed into another prime (3958391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979045 + 1979046.

It is an arithmetic number, because the mean of its divisors is an integer number (1979046).

Almost surely, 2^3958091 is an apocalyptic number.

3958091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3958091 is an equidigital number, since it uses as much as digits as its factorization.

3958091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 3958091 is about 1989.4951620951. The cubic root of 3958091 is about 158.1837711097.

The spelling of 3958091 in words is "three million, nine hundred fifty-eight thousand, ninety-one".