39441 has 4 divisors (see below), whose sum is σ = 52592. Its totient is φ = 26292.

The previous prime is 39439. The next prime is 39443. The reversal of 39441 is 14493.

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 an emirpimes, since its reverse is a distinct semiprime: 14493 = 3 ⋅4831.

It is an interprime number because it is at equal distance from previous prime (39439) and next prime (39443).

It is not a de Polignac number, because 39441 - 2¹ = 39439 is a prime.

It is a D-number.

It is a Duffinian number.

39441 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (39443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6571 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (13148).

2³⁹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

39441 is a deficient number, since it is larger than the sum of its proper divisors (13151).

39441 is a wasteful number, since it uses less digits than its factorization.

39441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13150.

The product of its digits is 432, while the sum is 21.

The square root of 39441 is about 198.5975830669. The cubic root of 39441 is about 34.0394582265.

It can be divided in two parts, 394 and 41, that added together give a triangular number (435 = T₂₉).

The spelling of 39441 in words is "thirty-nine thousand, four hundred forty-one".