3644109 has 20 divisors (see below), whose sum is σ = 6222304. Its totient is φ = 2082024.

The previous prime is 3644071. The next prime is 3644117. The reversal of 3644109 is 9014463.

3644109 is a `hidden beast` number, since 3 + 644 + 10 + 9 = 666.

It is not a de Polignac number, because 3644109 - 2⁸ = 3643853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

3644109 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2647 + ... + 3780.

Almost surely, 2^3644109 is an apocalyptic number.

It is an amenable number.

3644109 is a deficient number, since it is larger than the sum of its proper divisors (2578195).

3644109 is an equidigital number, since it uses as much as digits as its factorization.

3644109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446 (or 6437 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3644109 is about 1908.9549497042. The cubic root of 3644109 is about 153.8852943554.

The spelling of 3644109 in words is "three million, six hundred forty-four thousand, one hundred nine".