8287400897 has 2 divisors, whose sum is σ = 8287400898. Its totient is φ = 8287400896.

The previous prime is 8287400881. The next prime is 8287400899. The reversal of 8287400897 is 7980047828.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6191958721 + 2095442176 = 78689^2 + 45776^2 .

It is a cyclic number.

It is not a de Polignac number, because 8287400897 - 2⁴ = 8287400881 is a prime.

Together with 8287400899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8287400899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4143700448 + 4143700449.

It is an arithmetic number, because the mean of its divisors is an integer number (4143700449).

Almost surely, 2^8287400897 is an apocalyptic number.

It is an amenable number.

8287400897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8287400897 is an equidigital number, since it uses as much as digits as its factorization.

8287400897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 8287400897 is about 91035.1629701403. The cubic root of 8287400897 is about 2023.6688622586.

The spelling of 8287400897 in words is "eight billion, two hundred eighty-seven million, four hundred thousand, eight hundred ninety-seven".