443749 has 2 divisors, whose sum is σ = 443750. Its totient is φ = 443748.

The previous prime is 443731. The next prime is 443753. The reversal of 443749 is 947344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431649 + 12100 = 657^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 443749 - 2⁹ = 443237 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 4⁵ + 7⁴ + 3¹¹ + 4⁹ + 9 .

It is a self number, because there is not a number n which added to its sum of digits gives 443749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221874 + 221875.

It is an arithmetic number, because the mean of its divisors is an integer number (221875).

2⁴⁴³⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

443749 is a deficient number, since it is larger than the sum of its proper divisors (1).

443749 is an equidigital number, since it uses as much as digits as its factorization.

443749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 443749 is about 666.1448791367. The cubic root of 443749 is about 76.2744577996.

The spelling of 443749 in words is "four hundred forty-three thousand, seven hundred forty-nine".