8648280391 has 2 divisors, whose sum is σ = 8648280392. Its totient is φ = 8648280390.

The previous prime is 8648280379. The next prime is 8648280419. The reversal of 8648280391 is 1930828468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8648280391 - 2²⁹ = 8111409479 is a prime.

It is a super-2 number, since 2×8648280391² (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 (8648280491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324140195 + 4324140196.

It is an arithmetic number, because the mean of its divisors is an integer number (4324140196).

Almost surely, 2^8648280391 is an apocalyptic number.

8648280391 is a deficient number, since it is larger than the sum of its proper divisors (1).

8648280391 is an equidigital number, since it uses as much as digits as its factorization.

8648280391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 8648280391 is about 92996.1310539315. The cubic root of 8648280391 is about 2052.6264484441.

The spelling of 8648280391 in words is "eight billion, six hundred forty-eight million, two hundred eighty thousand, three hundred ninety-one".