443402149 has 2 divisors, whose sum is σ = 443402150. Its totient is φ = 443402148.

The previous prime is 443402147. The next prime is 443402161. The reversal of 443402149 is 941204344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443397249 + 4900 = 21057^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 443402149 - 2¹ = 443402147 is a prime.

Together with 443402147, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 443402149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443402147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221701074 + 221701075.

It is an arithmetic number, because the mean of its divisors is an integer number (221701075).

Almost surely, 2^443402149 is an apocalyptic number.

It is an amenable number.

443402149 is a deficient number, since it is larger than the sum of its proper divisors (1).

443402149 is an equidigital number, since it uses as much as digits as its factorization.

443402149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 443402149 is about 21057.1163505357. The cubic root of 443402149 is about 762.5457961923.

The spelling of 443402149 in words is "four hundred forty-three million, four hundred two thousand, one hundred forty-nine".