3643409 has 8 divisors (see below), whose sum is σ = 4542528. Its totient is φ = 2838960.

The previous prime is 3643403. The next prime is 3643411. The reversal of 3643409 is 9043463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3643409 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3643403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23582 + ... + 23735.

It is an arithmetic number, because the mean of its divisors is an integer number (567816).

Almost surely, 2^3643409 is an apocalyptic number.

It is an amenable number.

3643409 is a deficient number, since it is larger than the sum of its proper divisors (899119).

3643409 is a wasteful number, since it uses less digits than its factorization.

3643409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47335.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 3643409 is about 1908.7715945078. The cubic root of 3643409 is about 153.8754404053.

It can be divided in two parts, 364 and 3409, that added together give a palindrome (3773).

The spelling of 3643409 in words is "three million, six hundred forty-three thousand, four hundred nine".