8864197997 has 2 divisors, whose sum is σ = 8864197998. Its totient is φ = 8864197996.

The previous prime is 8864197973. The next prime is 8864198017. The reversal of 8864197997 is 7997914688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8732154916 + 132043081 = 93446^2 + 11491^2 .

It is a cyclic number.

It is not a de Polignac number, because 8864197997 - 2¹² = 8864193901 is a prime.

It is a super-2 number, since 2×8864197997² (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 (8864197967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4432098998 + 4432098999.

It is an arithmetic number, because the mean of its divisors is an integer number (4432098999).

Almost surely, 2^8864197997 is an apocalyptic number.

It is an amenable number.

8864197997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8864197997 is an equidigital number, since it uses as much as digits as its factorization.

8864197997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 68.

The square root of 8864197997 is about 94149.8698724539. The cubic root of 8864197997 is about 2069.5685501097.

The spelling of 8864197997 in words is "eight billion, eight hundred sixty-four million, one hundred ninety-seven thousand, nine hundred ninety-seven".