4538993 has 8 divisors (see below), whose sum is σ = 4720680. Its totient is φ = 4359040.

The previous prime is 4538977. The next prime is 4538999. The reversal of 4538993 is 3998354.

It can be written as a sum of positive squares in 4 ways, for example, as 283024 + 4255969 = 532^2 + 2063^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4538993 - 2⁴ = 4538977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4538993.

It is not an unprimeable number, because it can be changed into a prime (4538999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7871 + ... + 8427.

It is an arithmetic number, because the mean of its divisors is an integer number (590085).

Almost surely, 2^4538993 is an apocalyptic number.

It is an amenable number.

4538993 is a deficient number, since it is larger than the sum of its proper divisors (181687).

4538993 is a wasteful number, since it uses less digits than its factorization.

4538993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 116640, while the sum is 41.

The square root of 4538993 is about 2130.4912579027. The cubic root of 4538993 is about 165.5718511320.

The spelling of 4538993 in words is "four million, five hundred thirty-eight thousand, nine hundred ninety-three".