164449 has 2 divisors, whose sum is σ = 164450. Its totient is φ = 164448.

The previous prime is 164447. The next prime is 164471. The reversal of 164449 is 944461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154449 + 10000 = 393^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 164449 - 2¹ = 164447 is a prime.

Together with 164447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (164443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82224 + 82225.

It is an arithmetic number, because the mean of its divisors is an integer number (82225).

2¹⁶⁴⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

164449 is a deficient number, since it is larger than the sum of its proper divisors (1).

164449 is an equidigital number, since it uses as much as digits as its factorization.

164449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 164449 is about 405.5231189464. The cubic root of 164449 is about 54.7869443386.

It can be divided in two parts, 16 and 4449, that added together give a triangular number (4465 = T₉₄).

The spelling of 164449 in words is "one hundred sixty-four thousand, four hundred forty-nine".