3949589 has 4 divisors (see below), whose sum is σ = 4513824. Its totient is φ = 3385356.

The previous prime is 3949579. The next prime is 3949609. The reversal of 3949589 is 9859493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9859493 = 7 ⋅1408499.

It is a cyclic number.

It is not a de Polignac number, because 3949589 - 2⁸ = 3949333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282107 + ... + 282120.

It is an arithmetic number, because the mean of its divisors is an integer number (1128456).

Almost surely, 2^3949589 is an apocalyptic number.

It is an amenable number.

3949589 is a deficient number, since it is larger than the sum of its proper divisors (564235).

3949589 is an equidigital number, since it uses as much as digits as its factorization.

3949589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564234.

The product of its digits is 349920, while the sum is 47.

The square root of 3949589 is about 1987.3572904740. The cubic root of 3949589 is about 158.0704300649.

The spelling of 3949589 in words is "three million, nine hundred forty-nine thousand, five hundred eighty-nine".