3447861 has 16 divisors (see below), whose sum is σ = 4852224. Its totient is φ = 2173424.

The previous prime is 3447859. The next prime is 3447883. The reversal of 3447861 is 1687443.

3447861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3447861 - 2¹ = 3447859 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440861) 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 15 ways as a sum of consecutive naturals, for example, 7150 + ... + 7616.

It is an arithmetic number, because the mean of its divisors is an integer number (303264).

Almost surely, 2^3447861 is an apocalyptic number.

It is an amenable number.

3447861 is a deficient number, since it is larger than the sum of its proper divisors (1404363).

3447861 is a wasteful number, since it uses less digits than its factorization.

3447861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600.

The product of its digits is 16128, while the sum is 33.

The square root of 3447861 is about 1856.8416733798. The cubic root of 3447861 is about 151.0717463824.

It can be divided in two parts, 34 and 47861, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 3447861 in words is "three million, four hundred forty-seven thousand, eight hundred sixty-one".