3649589 has 4 divisors (see below), whose sum is σ = 3654156. Its totient is φ = 3645024.

The previous prime is 3649579. The next prime is 3649601. The reversal of 3649589 is 9859463.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3301489 + 348100 = 1817^2 + 590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3649589 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649549) 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, 734 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (913539).

Almost surely, 2^3649589 is an apocalyptic number.

It is an amenable number.

3649589 is a deficient number, since it is larger than the sum of its proper divisors (4567).

3649589 is a wasteful number, since it uses less digits than its factorization.

3649589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566.

The product of its digits is 233280, while the sum is 44.

The square root of 3649589 is about 1910.3897508100. The cubic root of 3649589 is about 153.9623931334.

The spelling of 3649589 in words is "three million, six hundred forty-nine thousand, five hundred eighty-nine".