8287260391 has 4 divisors (see below), whose sum is σ = 8287710984. Its totient is φ = 8286809800.

The previous prime is 8287260307. The next prime is 8287260427. The reversal of 8287260391 is 1930627828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8287260391 - 2²⁷ = 8153042663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8287260791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196480 + ... + 234901.

It is an arithmetic number, because the mean of its divisors is an integer number (2071927746).

Almost surely, 2^8287260391 is an apocalyptic number.

8287260391 is a deficient number, since it is larger than the sum of its proper divisors (450593).

8287260391 is a wasteful number, since it uses less digits than its factorization.

8287260391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450592.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 8287260391 is about 91034.3912540750. The cubic root of 8287260391 is about 2023.6574256523.

The spelling of 8287260391 in words is "eight billion, two hundred eighty-seven million, two hundred sixty thousand, three hundred ninety-one".