443150021 has 2 divisors, whose sum is σ = 443150022. Its totient is φ = 443150020.

The previous prime is 443150011. The next prime is 443150027. The reversal of 443150021 is 120051344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286624900 + 156525121 = 16930^2 + 12511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-443150021 is a prime.

It is a super-2 number, since 2×443150021² = 392763882224600882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 443149975 and 443150002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443150027) 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, 221575010 + 221575011.

It is an arithmetic number, because the mean of its divisors is an integer number (221575011).

Almost surely, 2^443150021 is an apocalyptic number.

It is an amenable number.

443150021 is a deficient number, since it is larger than the sum of its proper divisors (1).

443150021 is an equidigital number, since it uses as much as digits as its factorization.

443150021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 443150021 is about 21051.1287345833. The cubic root of 443150021 is about 762.4012354745.

The spelling of 443150021 in words is "four hundred forty-three million, one hundred fifty thousand, twenty-one".