74843984 has 20 divisors (see below), whose sum is σ = 145282740. Its totient is φ = 37351680.

The previous prime is 74843981. The next prime is 74843999. The reversal of 74843984 is 48934847.

It can be written as a sum of positive squares in 2 ways, for example, as 43930384 + 30913600 = 6628^2 + 5560^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74843981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4994 + ... + 13214.

It is an arithmetic number, because the mean of its divisors is an integer number (7264137).

Almost surely, 2^74843984 is an apocalyptic number.

It is an amenable number.

74843984 is a deficient number, since it is larger than the sum of its proper divisors (70438756).

74843984 is a wasteful number, since it uses less digits than its factorization.

74843984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8798 (or 8792 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 74843984 is about 8651.2417605798. The cubic root of 74843984 is about 421.4237096716.

The spelling of 74843984 in words is "seventy-four million, eight hundred forty-three thousand, nine hundred eighty-four".