9947151679 has 2 divisors, whose sum is σ = 9947151680. Its totient is φ = 9947151678.

The previous prime is 9947151653. The next prime is 9947151703. The reversal of 9947151679 is 9761517499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9947151679 - 2²³ = 9938763071 is a prime.

It is a super-3 number, since 3×9947151679³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9947151649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973575839 + 4973575840.

It is an arithmetic number, because the mean of its divisors is an integer number (4973575840).

Almost surely, 2^9947151679 is an apocalyptic number.

9947151679 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947151679 is an equidigital number, since it uses as much as digits as its factorization.

9947151679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 58.

The square root of 9947151679 is about 99735.4083512972. The cubic root of 9947151679 is about 2150.6327093330.

The spelling of 9947151679 in words is "nine billion, nine hundred forty-seven million, one hundred fifty-one thousand, six hundred seventy-nine".