5438661 has 8 divisors (see below), whose sum is σ = 7274784. Its totient is φ = 3614160.

The previous prime is 5438651. The next prime is 5438663. The reversal of 5438661 is 1668345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5438661 - 2¹⁹ = 4914373 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5438663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (909348).

Almost surely, 2^5438661 is an apocalyptic number.

It is an amenable number.

5438661 is a deficient number, since it is larger than the sum of its proper divisors (1836123).

5438661 is a wasteful number, since it uses less digits than its factorization.

5438661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811.

The product of its digits is 17280, while the sum is 33.

The square root of 5438661 is about 2332.0936945157. The cubic root of 5438661 is about 175.8587559108.

The spelling of 5438661 in words is "five million, four hundred thirty-eight thousand, six hundred sixty-one".