7897717147 has 2 divisors, whose sum is σ = 7897717148. Its totient is φ = 7897717146.

The previous prime is 7897717109. The next prime is 7897717159. The reversal of 7897717147 is 7417177987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7897717147 - 2⁷ = 7897717019 is a prime.

It is a super-2 number, since 2×7897717147² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7897717091 and 7897717100.

It is not a weakly prime, because it can be changed into another prime (7897711147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948858573 + 3948858574.

It is an arithmetic number, because the mean of its divisors is an integer number (3948858574).

Almost surely, 2^7897717147 is an apocalyptic number.

7897717147 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897717147 is an equidigital number, since it uses as much as digits as its factorization.

7897717147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4840416, while the sum is 58.

The square root of 7897717147 is about 88869.1011938345. The cubic root of 7897717147 is about 1991.4398430445.

The spelling of 7897717147 in words is "seven billion, eight hundred ninety-seven million, seven hundred seventeen thousand, one hundred forty-seven".