74384487 has 24 divisors (see below), whose sum is σ = 117295360. Its totient is φ = 46976760.

The previous prime is 74384477. The next prime is 74384501. The reversal of 74384487 is 78448347.

It is not a de Polignac number, because 74384487 - 2⁶ = 74384423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74384417) 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 23 ways as a sum of consecutive naturals, for example, 3439 + ... + 12672.

Almost surely, 2^74384487 is an apocalyptic number.

74384487 is a deficient number, since it is larger than the sum of its proper divisors (42910873).

74384487 is a wasteful number, since it uses less digits than its factorization.

74384487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16145 (or 16133 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 74384487 is about 8624.6441665729. The cubic root of 74384487 is about 420.5595094121.

The spelling of 74384487 in words is "seventy-four million, three hundred eighty-four thousand, four hundred eighty-seven".