8721761459 has 2 divisors, whose sum is σ = 8721761460. Its totient is φ = 8721761458.

The previous prime is 8721761441. The next prime is 8721761473. The reversal of 8721761459 is 9541671278.

It is a happy number.

8721761459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8721761459 - 2²⁴ = 8704984243 is a prime.

It is not a weakly prime, because it can be changed into another prime (8721761479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360880729 + 4360880730.

It is an arithmetic number, because the mean of its divisors is an integer number (4360880730).

Almost surely, 2^8721761459 is an apocalyptic number.

8721761459 is a deficient number, since it is larger than the sum of its proper divisors (1).

8721761459 is an equidigital number, since it uses as much as digits as its factorization.

8721761459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 50.

The square root of 8721761459 is about 93390.3713398764. The cubic root of 8721761459 is about 2058.4235164925.

The spelling of 8721761459 in words is "eight billion, seven hundred twenty-one million, seven hundred sixty-one thousand, four hundred fifty-nine".