3549729 has 8 divisors (see below), whose sum is σ = 4754560. Its totient is φ = 2355696.

The previous prime is 3549701. The next prime is 3549731. The reversal of 3549729 is 9279453.

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

It is not a de Polignac number, because 3549729 - 2⁵ = 3549697 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 5⁹ + 4³ + 9² + 7 + 2¹¹ + 9² .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3542729) 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, 1897 + ... + 3270.

It is an arithmetic number, because the mean of its divisors is an integer number (594320).

Almost surely, 2^3549729 is an apocalyptic number.

It is an amenable number.

3549729 is a deficient number, since it is larger than the sum of its proper divisors (1204831).

3549729 is a wasteful number, since it uses less digits than its factorization.

3549729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399.

The product of its digits is 68040, while the sum is 39.

The square root of 3549729 is about 1884.0724508362. The cubic root of 3549729 is about 152.5451483272.

It can be divided in two parts, 3549 and 729, that added together give a triangular number (4278 = T₉₂).

The spelling of 3549729 in words is "three million, five hundred forty-nine thousand, seven hundred twenty-nine".