6433849 has 4 divisors (see below), whose sum is σ = 6440436. Its totient is φ = 6427264.

The previous prime is 6433841. The next prime is 6433909. The reversal of 6433849 is 9483346.

6433849 is digitally balanced in base 3, 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9483346 = 2 ⋅4741673.

It can be written as a sum of positive squares in 2 ways, for example, as 4981824 + 1452025 = 2232^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 6433849 - 2³ = 6433841 is a prime.

It is a d-powerful number, because it can be written as 6 + 4 + 3⁹ + 3¹³ + 8⁵ + 4⁶ + 9⁷ .

It is a Duffinian number.

6433849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6433841) 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, 1504 + ... + 3889.

It is an arithmetic number, because the mean of its divisors is an integer number (1610109).

Almost surely, 2^6433849 is an apocalyptic number.

It is an amenable number.

6433849 is a deficient number, since it is larger than the sum of its proper divisors (6587).

6433849 is a wasteful number, since it uses less digits than its factorization.

6433849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6586.

The product of its digits is 62208, while the sum is 37.

The square root of 6433849 is about 2536.5033017917. The cubic root of 6433849 is about 185.9902970234.

The spelling of 6433849 in words is "six million, four hundred thirty-three thousand, eight hundred forty-nine".