8638880417 has 2 divisors, whose sum is σ = 8638880418. Its totient is φ = 8638880416.

The previous prime is 8638880389. The next prime is 8638880447. The reversal of 8638880417 is 7140888368.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6697949281 + 1940931136 = 81841^2 + 44056^2 .

It is a cyclic number.

It is not a de Polignac number, because 8638880417 - 2¹⁰ = 8638879393 is a prime.

It is not a weakly prime, because it can be changed into another prime (8638880447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4319440208 + 4319440209.

It is an arithmetic number, because the mean of its divisors is an integer number (4319440209).

Almost surely, 2^8638880417 is an apocalyptic number.

It is an amenable number.

8638880417 is a deficient number, since it is larger than the sum of its proper divisors (1).

8638880417 is an equidigital number, since it uses as much as digits as its factorization.

8638880417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 53.

The square root of 8638880417 is about 92945.5777162098. The cubic root of 8638880417 is about 2051.8824997760.

The spelling of 8638880417 in words is "eight billion, six hundred thirty-eight million, eight hundred eighty thousand, four hundred seventeen".