3654409 has 4 divisors (see below), whose sum is σ = 3986640. Its totient is φ = 3322180.

The previous prime is 3654397. The next prime is 3654419. The reversal of 3654409 is 9044563.

3654409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9044563 = 11 ⋅822233.

It is a cyclic number.

It is not a de Polignac number, because 3654409 - 2¹¹ = 3652361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3654419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166099 + ... + 166120.

It is an arithmetic number, because the mean of its divisors is an integer number (996660).

Almost surely, 2^3654409 is an apocalyptic number.

It is an amenable number.

3654409 is a deficient number, since it is larger than the sum of its proper divisors (332231).

3654409 is a wasteful number, since it uses less digits than its factorization.

3654409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332230.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3654409 is about 1911.6508572436. The cubic root of 3654409 is about 154.0301425228.

It can be divided in two parts, 365 and 4409, that added together give a palindrome (4774).

The spelling of 3654409 in words is "three million, six hundred fifty-four thousand, four hundred nine".