3644469 has 6 divisors (see below), whose sum is σ = 5264246. Its totient is φ = 2429640.

The previous prime is 3644437. The next prime is 3644479. The reversal of 3644469 is 9644463.

3644469 is a `hidden beast` number, since 3 + 644 + 4 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1988100 + 1656369 = 1410^2 + 1287^2 .

It is not a de Polignac number, because 3644469 - 2⁵ = 3644437 is a prime.

It is a super-2 number, since 2×3644469² = 26564308583922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202462 + ... + 202479.

Almost surely, 2^3644469 is an apocalyptic number.

It is an amenable number.

3644469 is a deficient number, since it is larger than the sum of its proper divisors (1619777).

3644469 is a wasteful number, since it uses less digits than its factorization.

3644469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404947 (or 404944 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 3644469 is about 1909.0492398050. The cubic root of 3644469 is about 153.8903616098.

The spelling of 3644469 in words is "three million, six hundred forty-four thousand, four hundred sixty-nine".