4247984 has 30 divisors (see below), whose sum is σ = 8917956. Its totient is φ = 1959360.

The previous prime is 4247983. The next prime is 4248017. The reversal of 4247984 is 4897424.

It is a d-powerful number, because it can be written as 4⁶ + 2²¹ + 4¹⁰ + 7⁵ + 9 + 8⁵ + 4¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (4247981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1919 + ... + 3489.

Almost surely, 2^4247984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4247984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4458978).

4247984 is an abundant number, since it is smaller than the sum of its proper divisors (4669972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4247984 is a wasteful number, since it uses less digits than its factorization.

4247984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1586 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 4247984 is about 2061.0638029911. The cubic root of 4247984 is about 161.9549740233.

It can be divided in two parts, 4 and 247984, that multiplied together give a triangular number (991936 = T₁₄₀₈).

The spelling of 4247984 in words is "four million, two hundred forty-seven thousand, nine hundred eighty-four".