441691 has 4 divisors (see below), whose sum is σ = 447984. Its totient is φ = 435400.

The previous prime is 441667. The next prime is 441697. The reversal of 441691 is 196144.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 441691 - 2⁷ = 441563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040 + ... + 3181.

It is an arithmetic number, because the mean of its divisors is an integer number (111996).

2⁴⁴¹⁶⁹¹ is an apocalyptic number.

441691 is a deficient number, since it is larger than the sum of its proper divisors (6293).

441691 is an equidigital number, since it uses as much as digits as its factorization.

441691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6292.

The product of its digits is 864, while the sum is 25.

The square root of 441691 is about 664.5983749604. The cubic root of 441691 is about 76.1563609110.

It can be divided in two parts, 4416 and 91, that multiplied together give a triangular number (401856 = T₈₉₆).

The spelling of 441691 in words is "four hundred forty-one thousand, six hundred ninety-one".