3541991 has 2 divisors, whose sum is σ = 3541992. Its totient is φ = 3541990.

The previous prime is 3541987. The next prime is 3541997. The reversal of 3541991 is 1991453.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3541991 - 2² = 3541987 is a prime.

It is a super-3 number, since 3×3541991³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3541997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1770995 + 1770996.

It is an arithmetic number, because the mean of its divisors is an integer number (1770996).

Almost surely, 2^3541991 is an apocalyptic number.

3541991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3541991 is an equidigital number, since it uses as much as digits as its factorization.

3541991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 32.

The square root of 3541991 is about 1882.0178001284. The cubic root of 3541991 is about 152.4342240749.

The spelling of 3541991 in words is "three million, five hundred forty-one thousand, nine hundred ninety-one".