75449 has 8 divisors (see below), whose sum is σ = 86880. Its totient is φ = 64980.

The previous prime is 75437. The next prime is 75479. The reversal of 75449 is 94457.

It is not a de Polignac number, because 75449 - 2⁸ = 75193 is a prime.

It is a d-powerful number, because it can be written as 7 + 5 + 4 + 4⁷ + 9⁵ .

It is a Duffinian number.

Its product of digits (5040) is a multiple of the sum of its prime divisors (30).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 75449.

It is not an unprimeable number, because it can be changed into a prime (75479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3962 + ... + 3980.

It is an arithmetic number, because the mean of its divisors is an integer number (10860).

2⁷⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

75449 is a deficient number, since it is larger than the sum of its proper divisors (11431).

75449 is an equidigital number, since it uses as much as digits as its factorization.

75449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 30 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 75449 is about 274.6798136012. The cubic root of 75449 is about 42.2556217208.

It can be divided in two parts, 7544 and 9, that multiplied together give a triangular number (67896 = T₃₆₈).

The spelling of 75449 in words is "seventy-five thousand, four hundred forty-nine".