3669409 has 4 divisors (see below), whose sum is σ = 3674160. Its totient is φ = 3664660.

The previous prime is 3669383. The next prime is 3669427. The reversal of 3669409 is 9049663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3669409 - 2⁹ = 3668897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3669469) 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, 919 + ... + 2860.

It is an arithmetic number, because the mean of its divisors is an integer number (918540).

Almost surely, 2^3669409 is an apocalyptic number.

It is an amenable number.

3669409 is a deficient number, since it is larger than the sum of its proper divisors (4751).

3669409 is an equidigital number, since it uses as much as digits as its factorization.

3669409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 3669409 is about 1915.5701501120. The cubic root of 3669409 is about 154.2406004603.

The spelling of 3669409 in words is "three million, six hundred sixty-nine thousand, four hundred nine".