3781441 has 4 divisors (see below), whose sum is σ = 3785472. Its totient is φ = 3777412.

The previous prime is 3781433. The next prime is 3781447. The reversal of 3781441 is 1441873.

3781441 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1441873 = 149 ⋅9677.

It is a cyclic number.

It is not a de Polignac number, because 3781441 - 2³ = 3781433 is a prime.

It is a Duffinian number.

3781441 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3781447) 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, 216 + ... + 2758.

It is an arithmetic number, because the mean of its divisors is an integer number (946368).

Almost surely, 2^3781441 is an apocalyptic number.

It is an amenable number.

3781441 is a deficient number, since it is larger than the sum of its proper divisors (4031).

3781441 is a wasteful number, since it uses less digits than its factorization.

3781441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030.

The product of its digits is 2688, while the sum is 28.

The square root of 3781441 is about 1944.5927594229. The cubic root of 3781441 is about 155.7946152074.

The spelling of 3781441 in words is "three million, seven hundred eighty-one thousand, four hundred forty-one".