8429984 has 12 divisors (see below), whose sum is σ = 16596594. Its totient is φ = 4214976.

The previous prime is 8429963. The next prime is 8430013. The reversal of 8429984 is 4899248.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5290000 + 3139984 = 2300^2 + 1772^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131687 + ... + 131750.

Almost surely, 2^8429984 is an apocalyptic number.

It is an amenable number.

8429984 is a deficient number, since it is larger than the sum of its proper divisors (8166610).

8429984 is a wasteful number, since it uses less digits than its factorization.

8429984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263447 (or 263439 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 8429984 is about 2903.4434728439. The cubic root of 8429984 is about 203.5208542117.

The spelling of 8429984 in words is "eight million, four hundred twenty-nine thousand, nine hundred eighty-four".