3641409 has 8 divisors (see below), whose sum is σ = 5394720. Its totient is φ = 2427588.

The previous prime is 3641401. The next prime is 3641423. The reversal of 3641409 is 9041463.

It is not a de Polignac number, because 3641409 - 2³ = 3641401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 134867 = 3641409 / (3 + 6 + 4 + 1 + 4 + 0 + 9).

It is a Curzon number.

3641409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3641401) 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, 67407 + ... + 67460.

It is an arithmetic number, because the mean of its divisors is an integer number (674340).

Almost surely, 2^3641409 is an apocalyptic number.

It is an amenable number.

3641409 is a deficient number, since it is larger than the sum of its proper divisors (1753311).

3641409 is a wasteful number, since it uses less digits than its factorization.

3641409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134876 (or 134870 counting only the distinct ones).

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

The square root of 3641409 is about 1908.2476254407. The cubic root of 3641409 is about 153.8472793059.

The spelling of 3641409 in words is "three million, six hundred forty-one thousand, four hundred nine".