381441 has 8 divisors (see below), whose sum is σ = 518400. Its totient is φ = 249392.

The previous prime is 381439. The next prime is 381443. The reversal of 381441 is 144183.

It is an interprime number because it is at equal distance from previous prime (381439) and next prime (381443).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381441 - 2¹ = 381439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041 + ... + 1358.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2³⁸¹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

381441 is a deficient number, since it is larger than the sum of its proper divisors (136959).

381441 is a wasteful number, since it uses less digits than its factorization.

381441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455.

The product of its digits is 384, while the sum is 21.

The square root of 381441 is about 617.6090996739. The cubic root of 381441 is about 72.5230049865.

The spelling of 381441 in words is "three hundred eighty-one thousand, four hundred forty-one".