8498221291 has 8 divisors (see below), whose sum is σ = 9876867840. Its totient is φ = 7160728488.

The previous prime is 8498221271. The next prime is 8498221321. The reversal of 8498221291 is 1921228948.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8498221291 - 2⁹ = 8498220779 is a prime.

It is a super-2 number, since 2×8498221291² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8498221211) 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 in 7 ways as a sum of consecutive naturals, for example, 10287991 + ... + 10288816.

It is an arithmetic number, because the mean of its divisors is an integer number (1234608480).

Almost surely, 2^8498221291 is an apocalyptic number.

8498221291 is a deficient number, since it is larger than the sum of its proper divisors (1378646549).

8498221291 is a wasteful number, since it uses less digits than its factorization.

8498221291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20576873.

The product of its digits is 165888, while the sum is 46.

The square root of 8498221291 is about 92185.7976642823. The cubic root of 8498221291 is about 2040.6851865834.

The spelling of 8498221291 in words is "eight billion, four hundred ninety-eight million, two hundred twenty-one thousand, two hundred ninety-one".