8469147997 has 2 divisors, whose sum is σ = 8469147998. Its totient is φ = 8469147996.

The previous prime is 8469147977. The next prime is 8469148001. The reversal of 8469147997 is 7997419648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6947055801 + 1522092196 = 83349^2 + 39014^2 .

It is a cyclic number.

It is not a de Polignac number, because 8469147997 - 2¹⁵ = 8469115229 is a prime.

It is a super-2 number, since 2×8469147997² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8469147937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4234573998 + 4234573999.

It is an arithmetic number, because the mean of its divisors is an integer number (4234573999).

Almost surely, 2^8469147997 is an apocalyptic number.

It is an amenable number.

8469147997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8469147997 is an equidigital number, since it uses as much as digits as its factorization.

8469147997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 64.

The square root of 8469147997 is about 92027.9739916076. The cubic root of 8469147997 is about 2038.3553960455.

The spelling of 8469147997 in words is "eight billion, four hundred sixty-nine million, one hundred forty-seven thousand, nine hundred ninety-seven".