3889591 has 2 divisors, whose sum is σ = 3889592. Its totient is φ = 3889590.

The previous prime is 3889537. The next prime is 3889607. The reversal of 3889591 is 1959883.

It is a strong prime.

It is an emirp because it is prime and its reverse (1959883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3889591 - 2⁹ = 3889079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3889891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944795 + 1944796.

It is an arithmetic number, because the mean of its divisors is an integer number (1944796).

Almost surely, 2^3889591 is an apocalyptic number.

3889591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3889591 is an equidigital number, since it uses as much as digits as its factorization.

3889591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 43.

The square root of 3889591 is about 1972.2046039902. The cubic root of 3889591 is about 157.2659292850.

The spelling of 3889591 in words is "three million, eight hundred eighty-nine thousand, five hundred ninety-one".