5649409 has 4 divisors (see below), whose sum is σ = 5831680. Its totient is φ = 5467140.

The previous prime is 5649401. The next prime is 5649433. The reversal of 5649409 is 9049465.

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 5649409 - 2³ = 5649401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5649401) 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, 91089 + ... + 91150.

It is an arithmetic number, because the mean of its divisors is an integer number (1457920).

Almost surely, 2^5649409 is an apocalyptic number.

It is an amenable number.

5649409 is a deficient number, since it is larger than the sum of its proper divisors (182271).

5649409 is a wasteful number, since it uses less digits than its factorization.

5649409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182270.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5649409 is about 2376.8485437655. The cubic root of 5649409 is about 178.1015390872.

The spelling of 5649409 in words is "five million, six hundred forty-nine thousand, four hundred nine".