443154149 has 2 divisors, whose sum is σ = 443154150. Its totient is φ = 443154148.

The previous prime is 443154139. The next prime is 443154169. The reversal of 443154149 is 941451344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392317249 + 50836900 = 19807^2 + 7130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-443154149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443154139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221577074 + 221577075.

It is an arithmetic number, because the mean of its divisors is an integer number (221577075).

Almost surely, 2^443154149 is an apocalyptic number.

It is an amenable number.

443154149 is a deficient number, since it is larger than the sum of its proper divisors (1).

443154149 is an equidigital number, since it uses as much as digits as its factorization.

443154149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 443154149 is about 21051.2267813541. The cubic root of 443154149 is about 762.4036027559.

The spelling of 443154149 in words is "four hundred forty-three million, one hundred fifty-four thousand, one hundred forty-nine".