5649841 has 6 divisors (see below), whose sum is σ = 5792726. Its totient is φ = 5510400.

The previous prime is 5649829. The next prime is 5649851. The reversal of 5649841 is 1489465.

It is a happy number.

5649841 is a nontrivial binomial coefficient, being equal to C(3362, 2).

It can be written as a sum of positive squares in 3 ways, for example, as 9216 + 5640625 = 96^2 + 2375^2 .

It is not a de Polignac number, because 5649841 - 2¹⁹ = 5125553 is a prime.

5649841 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5649841.

It is not an unprimeable number, because it can be changed into a prime (5649851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1 + ... + 3361.

Almost surely, 2^5649841 is an apocalyptic number.

5649841 is the 3361-st triangular number and also the 1681-st hexagonal number.

5649841 is the 1121-st centered nonagonal number.

It is an amenable number.

5649841 is a deficient number, since it is larger than the sum of its proper divisors (142885).

5649841 is an equidigital number, since it uses as much as digits as its factorization.

5649841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443 (or 3402 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 5649841 is about 2376.9394186643. The cubic root of 5649841 is about 178.1060786714.

The spelling of 5649841 in words is "five million, six hundred forty-nine thousand, eight hundred forty-one".