3549739 has 4 divisors (see below), whose sum is σ = 3636360. Its totient is φ = 3463120.

The previous prime is 3549737. The next prime is 3549757. The reversal of 3549739 is 9379453.

3549739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9379453 = 31 ⋅302563.

It is a cyclic number.

It is not a de Polignac number, because 3549739 - 2¹ = 3549737 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3549739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3549731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43249 + ... + 43330.

It is an arithmetic number, because the mean of its divisors is an integer number (909090).

Almost surely, 2^3549739 is an apocalyptic number.

3549739 is a deficient number, since it is larger than the sum of its proper divisors (86621).

3549739 is an equidigital number, since it uses as much as digits as its factorization.

3549739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86620.

The product of its digits is 102060, while the sum is 40.

The square root of 3549739 is about 1884.0751046601. The cubic root of 3549739 is about 152.5452915729.

The spelling of 3549739 in words is "three million, five hundred forty-nine thousand, seven hundred thirty-nine".