3205989 has 12 divisors (see below), whose sum is σ = 4780672. Its totient is φ = 2068200.

The previous prime is 3205981. The next prime is 3205997. The reversal of 3205989 is 9895023.

It is an interprime number because it is at equal distance from previous prime (3205981) and next prime (3205997).

It is not a de Polignac number, because 3205989 - 2³ = 3205981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3205981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5467 + ... + 6024.

Almost surely, 2^3205989 is an apocalyptic number.

It is an amenable number.

3205989 is a deficient number, since it is larger than the sum of its proper divisors (1574683).

3205989 is a wasteful number, since it uses less digits than its factorization.

3205989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528 (or 11525 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 3205989 is about 1790.5275758837. The cubic root of 3205989 is about 147.4531345891.

The spelling of 3205989 in words is "three million, two hundred five thousand, nine hundred eighty-nine".