74384789 has 8 divisors (see below), whose sum is σ = 75264000. Its totient is φ = 73510416.

The previous prime is 74384777. The next prime is 74384833. The reversal of 74384789 is 98748347.

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

It is a cyclic number.

It is not a de Polignac number, because 74384789 - 2⁴ = 74384773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74384719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36212 + ... + 38210.

It is an arithmetic number, because the mean of its divisors is an integer number (9408000).

Almost surely, 2^74384789 is an apocalyptic number.

It is an amenable number.

74384789 is a deficient number, since it is larger than the sum of its proper divisors (879211).

74384789 is a wasteful number, since it uses less digits than its factorization.

74384789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its digits is 1354752, while the sum is 50.

The square root of 74384789 is about 8624.6616745238. The cubic root of 74384789 is about 420.5600785666.

The spelling of 74384789 in words is "seventy-four million, three hundred eighty-four thousand, seven hundred eighty-nine".