74427549 has 8 divisors (see below), whose sum is σ = 113413440. Its totient is φ = 42530016.

The previous prime is 74427533. The next prime is 74427557. The reversal of 74427549 is 94572447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74427549 - 2⁴ = 74427533 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74427549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74427569) 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, 1772064 + ... + 1772105.

It is an arithmetic number, because the mean of its divisors is an integer number (14176680).

Almost surely, 2^74427549 is an apocalyptic number.

It is an amenable number.

74427549 is a deficient number, since it is larger than the sum of its proper divisors (38985891).

74427549 is a wasteful number, since it uses less digits than its factorization.

74427549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544179.

The product of its digits is 282240, while the sum is 42.

The square root of 74427549 is about 8627.1402561915. The cubic root of 74427549 is about 420.6406492694.

The spelling of 74427549 in words is "seventy-four million, four hundred twenty-seven thousand, five hundred forty-nine".