4168993 has 4 divisors (see below), whose sum is σ = 4190788. Its totient is φ = 4147200.

The previous prime is 4168987. The next prime is 4169057. The reversal of 4168993 is 3998614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3998614 = 2 ⋅1999307.

It can be written as a sum of positive squares in 2 ways, for example, as 2471184 + 1697809 = 1572^2 + 1303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4168993 is a prime.

It is a Duffinian number.

4168993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4168933) 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 3 ways as a sum of consecutive naturals, for example, 10608 + ... + 10993.

It is an arithmetic number, because the mean of its divisors is an integer number (1047697).

Almost surely, 2^4168993 is an apocalyptic number.

It is an amenable number.

4168993 is a deficient number, since it is larger than the sum of its proper divisors (21795).

4168993 is a wasteful number, since it uses less digits than its factorization.

4168993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21794.

The product of its digits is 46656, while the sum is 40.

The square root of 4168993 is about 2041.8112057681. The cubic root of 4168993 is about 160.9448391978.

It can be divided in two parts, 416 and 8993, that added together give a square (9409 = 97²).

The spelling of 4168993 in words is "four million, one hundred sixty-eight thousand, nine hundred ninety-three".