4066549 has 8 divisors (see below), whose sum is σ = 4223232. Its totient is φ = 3911520.

The previous prime is 4066537. The next prime is 4066567. The reversal of 4066549 is 9456604.

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 4066549 - 2¹³ = 4058357 is a prime.

It is a Duffinian number.

4066549 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066949) 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, 6942 + ... + 7504.

It is an arithmetic number, because the mean of its divisors is an integer number (527904).

Almost surely, 2^4066549 is an apocalyptic number.

It is an amenable number.

4066549 is a deficient number, since it is larger than the sum of its proper divisors (156683).

4066549 is a wasteful number, since it uses less digits than its factorization.

4066549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 4066549 is about 2016.5686202061. The cubic root of 4066549 is about 159.6156006593.

The spelling of 4066549 in words is "four million, sixty-six thousand, five hundred forty-nine".