7984642 has 16 divisors (see below), whose sum is σ = 12327552. Its totient is φ = 3876880.

The previous prime is 7984633. The next prime is 7984643. The reversal of 7984642 is 2464897.

It is a d-powerful number, because it can be written as 7⁴ + 9⁴ + 8³ + 4⁶ + 6⁸ + 4¹¹ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 7984595 and 7984604.

It is not an unprimeable number, because it can be changed into a prime (7984643) 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 7 ways as a sum of consecutive naturals, for example, 16017 + ... + 16507.

It is an arithmetic number, because the mean of its divisors is an integer number (770472).

Almost surely, 2^7984642 is an apocalyptic number.

7984642 is a deficient number, since it is larger than the sum of its proper divisors (4342910).

7984642 is a wasteful number, since it uses less digits than its factorization.

7984642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its digits is 96768, while the sum is 40.

The square root of 7984642 is about 2825.7108840078. The cubic root of 7984642 is about 199.8719346805.

The spelling of 7984642 in words is "seven million, nine hundred eighty-four thousand, six hundred forty-two".