3890591 has 2 divisors, whose sum is σ = 3890592. Its totient is φ = 3890590.

The previous prime is 3890581. The next prime is 3890609. The reversal of 3890591 is 1950983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3890591 - 2⁶ = 3890527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3890521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945295 + 1945296.

It is an arithmetic number, because the mean of its divisors is an integer number (1945296).

Almost surely, 2^3890591 is an apocalyptic number.

3890591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3890591 is an equidigital number, since it uses as much as digits as its factorization.

3890591 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 3890591 is about 1972.4581110888. The cubic root of 3890591 is about 157.2794056336.

The spelling of 3890591 in words is "three million, eight hundred ninety thousand, five hundred ninety-one".