74449 has 2 divisors, whose sum is σ = 74450. Its totient is φ = 74448.

The previous prime is 74441. The next prime is 74453. The reversal of 74449 is 94447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46225 + 28224 = 215^2 + 168^2 .

It is an emirp because it is prime and its reverse (94447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74449 - 2³ = 74441 is a prime.

74449 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (74441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37224 + 37225.

It is an arithmetic number, because the mean of its divisors is an integer number (37225).

2⁷⁴⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

74449 is a deficient number, since it is larger than the sum of its proper divisors (1).

74449 is an equidigital number, since it uses as much as digits as its factorization.

74449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 74449 is about 272.8534405134. The cubic root of 74449 is about 42.0681056780.

The spelling of 74449 in words is "seventy-four thousand, four hundred forty-nine".