7989756 has 12 divisors (see below), whose sum is σ = 18642792. Its totient is φ = 2663248.

The previous prime is 7989749. The next prime is 7989757. The reversal of 7989756 is 6579897.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 7989699 and 7989708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7989757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332895 + ... + 332918.

It is an arithmetic number, because the mean of its divisors is an integer number (1553566).

Almost surely, 2^7989756 is an apocalyptic number.

It is an amenable number.

7989756 is an abundant number, since it is smaller than the sum of its proper divisors (10653036).

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

7989756 is a wasteful number, since it uses less digits than its factorization.

7989756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665820 (or 665818 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 7989756 is about 2826.6156441936. The cubic root of 7989756 is about 199.9145968701.

The spelling of 7989756 in words is "seven million, nine hundred eighty-nine thousand, seven hundred fifty-six".