7983547440 has 80 divisors (see below), whose sum is σ = 26998914816. Its totient is φ = 1935404800.

The previous prime is 7983547423. The next prime is 7983547493. The reversal of 7983547440 is 447453897.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1509396 + ... + 1514675.

Almost surely, 2^7983547440 is an apocalyptic number.

It is an amenable number.

7983547440 is an abundant number, since it is smaller than the sum of its proper divisors (19015367376).

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

7983547440 is a wasteful number, since it uses less digits than its factorization.

7983547440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024098 (or 3024092 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The square root of 7983547440 is about 89350.6991578689. The cubic root of 7983547440 is about 1998.6280123735.

The spelling of 7983547440 in words is "seven billion, nine hundred eighty-three million, five hundred forty-seven thousand, four hundred forty".