3891103 has 2 divisors, whose sum is σ = 3891104. Its totient is φ = 3891102.

The previous prime is 3891077. The next prime is 3891131. The reversal of 3891103 is 3011983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3891103 - 2⁹ = 3890591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3891203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945551 + 1945552.

It is an arithmetic number, because the mean of its divisors is an integer number (1945552).

Almost surely, 2^3891103 is an apocalyptic number.

3891103 is a deficient number, since it is larger than the sum of its proper divisors (1).

3891103 is an equidigital number, since it uses as much as digits as its factorization.

3891103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3891103 is about 1972.5878941127. The cubic root of 3891103 is about 157.2863046304.

The spelling of 3891103 in words is "three million, eight hundred ninety-one thousand, one hundred three".