3644289 has 24 divisors (see below), whose sum is σ = 5806944. Its totient is φ = 2184000.

The previous prime is 3644279. The next prime is 3644297. The reversal of 3644289 is 9824463.

It is a happy number.

3644289 is a `hidden beast` number, since 3 + 644 + 2 + 8 + 9 = 666.

It is not a de Polignac number, because 3644289 - 2¹¹ = 3642241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3644279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12829 + ... + 13109.

It is an arithmetic number, because the mean of its divisors is an integer number (241956).

Almost surely, 2^3644289 is an apocalyptic number.

It is an amenable number.

3644289 is a deficient number, since it is larger than the sum of its proper divisors (2162655).

3644289 is a wasteful number, since it uses less digits than its factorization.

3644289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 426 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3644289 is about 1909.0020953367. The cubic root of 3644289 is about 153.8878280243.

The spelling of 3644289 in words is "three million, six hundred forty-four thousand, two hundred eighty-nine".