7947108936 has 224 divisors, whose sum is σ = 24718544760. Its totient is φ = 2378336256.

The previous prime is 7947108919. The next prime is 7947108959. The reversal of 7947108936 is 6398017497.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6657580836 + 1289528100 = 81594^2 + 35910^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2803776 + ... + 2806608.

Almost surely, 2^7947108936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7947108936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12359272380).

7947108936 is an abundant number, since it is smaller than the sum of its proper divisors (16771435824).

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

7947108936 is a wasteful number, since it uses less digits than its factorization.

7947108936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 7947108936 is about 89146.5587445752. The cubic root of 7947108936 is about 1995.5826620791.

The spelling of 7947108936 in words is "seven billion, nine hundred forty-seven million, one hundred eight thousand, nine hundred thirty-six".