9947459377 has 2 divisors, whose sum is σ = 9947459378. Its totient is φ = 9947459376.

The previous prime is 9947459351. The next prime is 9947459437. The reversal of 9947459377 is 7739547499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9926336161 + 21123216 = 99631^2 + 4596^2 .

It is a cyclic number.

It is not a de Polignac number, because 9947459377 - 2¹¹ = 9947457329 is a prime.

It is not a weakly prime, because it can be changed into another prime (9947451377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973729688 + 4973729689.

It is an arithmetic number, because the mean of its divisors is an integer number (4973729689).

Almost surely, 2^9947459377 is an apocalyptic number.

It is an amenable number.

9947459377 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947459377 is an equidigital number, since it uses as much as digits as its factorization.

9947459377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60011280, while the sum is 64.

The square root of 9947459377 is about 99736.9509108836. The cubic root of 9947459377 is about 2150.6548844769.

It can be divided in two parts, 99474 and 59377, that added together give a palindrome (158851).

The spelling of 9947459377 in words is "nine billion, nine hundred forty-seven million, four hundred fifty-nine thousand, three hundred seventy-seven".