5678449 has 4 divisors (see below), whose sum is σ = 6489664. Its totient is φ = 4867236.

The previous prime is 5678437. The next prime is 5678471. The reversal of 5678449 is 9448765.

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: 9448765 = 5 ⋅1889753.

It is a cyclic number.

It is not a de Polignac number, because 5678449 - 2⁹ = 5677937 is a prime.

It is a Duffinian number.

5678449 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5678419) 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, 405597 + ... + 405610.

It is an arithmetic number, because the mean of its divisors is an integer number (1622416).

Almost surely, 2^5678449 is an apocalyptic number.

It is an amenable number.

5678449 is a deficient number, since it is larger than the sum of its proper divisors (811215).

5678449 is an equidigital number, since it uses as much as digits as its factorization.

5678449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811214.

The product of its digits is 241920, while the sum is 43.

The square root of 5678449 is about 2382.9496427747. The cubic root of 5678449 is about 178.4061864003.

The spelling of 5678449 in words is "five million, six hundred seventy-eight thousand, four hundred forty-nine".