164443 has 2 divisors, whose sum is σ = 164444. Its totient is φ = 164442.

The previous prime is 164431. The next prime is 164447. The reversal of 164443 is 344461.

It is a happy number.

164443 is nontrivially palindromic in base 12.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164443 is a prime.

164443 is a lucky number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (164447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82221 + 82222.

It is an arithmetic number, because the mean of its divisors is an integer number (82222).

2¹⁶⁴⁴⁴³ is an apocalyptic number.

164443 is a deficient number, since it is larger than the sum of its proper divisors (1).

164443 is an equidigital number, since it uses as much as digits as its factorization.

164443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 164443 is about 405.5157210269. The cubic root of 164443 is about 54.7862780213.

The spelling of 164443 in words is "one hundred sixty-four thousand, four hundred forty-three".