3949289 has 4 divisors (see below), whose sum is σ = 3999360. Its totient is φ = 3899220.

The previous prime is 3949273. The next prime is 3949291. The reversal of 3949289 is 9829493.

3949289 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3949289 - 2⁴ = 3949273 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949889) 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, 24917 + ... + 25074.

It is an arithmetic number, because the mean of its divisors is an integer number (999840).

Almost surely, 2^3949289 is an apocalyptic number.

It is an amenable number.

3949289 is a deficient number, since it is larger than the sum of its proper divisors (50071).

3949289 is an equidigital number, since it uses as much as digits as its factorization.

3949289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50070.

The product of its digits is 139968, while the sum is 44.

The square root of 3949289 is about 1987.2818119230. The cubic root of 3949289 is about 158.0664277641.

The spelling of 3949289 in words is "three million, nine hundred forty-nine thousand, two hundred eighty-nine".