3447381 has 16 divisors (see below), whose sum is σ = 5289984. Its totient is φ = 1956144.

The previous prime is 3447377. The next prime is 3447407. The reversal of 3447381 is 1837443.

3447381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3447381 - 2² = 3447377 is a prime.

It is a super-2 number, since 2×3447381² = 23768871518322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3447281) 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, 3016 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (330624).

Almost surely, 2^3447381 is an apocalyptic number.

It is an amenable number.

3447381 is a deficient number, since it is larger than the sum of its proper divisors (1842603).

3447381 is a wasteful number, since it uses less digits than its factorization.

3447381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its digits is 8064, while the sum is 30.

The square root of 3447381 is about 1856.7124171503. The cubic root of 3447381 is about 151.0647354845.

It can be divided in two parts, 3447 and 381, that added together give a triangular number (3828 = T₈₇).

The spelling of 3447381 in words is "three million, four hundred forty-seven thousand, three hundred eighty-one".