7947056440 has 16 divisors (see below), whose sum is σ = 17880877080. Its totient is φ = 3178822560.

The previous prime is 7947056437. The next prime is 7947056459. The reversal of 7947056440 is 446507497.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99338166 + ... + 99338245.

Almost surely, 2^7947056440 is an apocalyptic number.

It is an amenable number.

7947056440 is an abundant number, since it is smaller than the sum of its proper divisors (9933820640).

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

7947056440 is a wasteful number, since it uses less digits than its factorization.

7947056440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198676422 (or 198676418 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 7947056440 is about 89146.2643075973. The cubic root of 7947056440 is about 1995.5782680142.

The spelling of 7947056440 in words is "seven billion, nine hundred forty-seven million, fifty-six thousand, four hundred forty".