213449443 has 2 divisors, whose sum is σ = 213449444. Its totient is φ = 213449442.

The previous prime is 213449437. The next prime is 213449449. The reversal of 213449443 is 344944312.

It is a balanced prime because it is at equal distance from previous prime (213449437) and next prime (213449449).

It is a cyclic number.

It is not a de Polignac number, because 213449443 - 2¹³ = 213441251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213449399 and 213449408.

It is not a weakly prime, because it can be changed into another prime (213449449) 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, 106724721 + 106724722.

It is an arithmetic number, because the mean of its divisors is an integer number (106724722).

Almost surely, 2^213449443 is an apocalyptic number.

213449443 is a deficient number, since it is larger than the sum of its proper divisors (1).

213449443 is an equidigital number, since it uses as much as digits as its factorization.

213449443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 34.

The square root of 213449443 is about 14609.9090688478. The cubic root of 213449443 is about 597.6290162160.

The spelling of 213449443 in words is "two hundred thirteen million, four hundred forty-nine thousand, four hundred forty-three".