8798721439 has 2 divisors, whose sum is σ = 8798721440. Its totient is φ = 8798721438.

The previous prime is 8798721359. The next prime is 8798721469. The reversal of 8798721439 is 9341278978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8798721439 - 2¹⁹ = 8798197151 is a prime.

It is a super-3 number, since 3×8798721439³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8798721469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4399360719 + 4399360720.

It is an arithmetic number, because the mean of its divisors is an integer number (4399360720).

Almost surely, 2^8798721439 is an apocalyptic number.

8798721439 is a deficient number, since it is larger than the sum of its proper divisors (1).

8798721439 is an equidigital number, since it uses as much as digits as its factorization.

8798721439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 58.

The square root of 8798721439 is about 93801.5001958924. The cubic root of 8798721439 is about 2064.4602387141.

The spelling of 8798721439 in words is "eight billion, seven hundred ninety-eight million, seven hundred twenty-one thousand, four hundred thirty-nine".