8742208821 has 8 divisors (see below), whose sum is σ = 11904284544. Its totient is φ = 5704136160.

The previous prime is 8742208799. The next prime is 8742208831. The reversal of 8742208821 is 1288022478.

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

It is not a de Polignac number, because 8742208821 - 2⁵ = 8742208789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742208831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31000600 + ... + 31000881.

It is an arithmetic number, because the mean of its divisors is an integer number (1488035568).

Almost surely, 2^8742208821 is an apocalyptic number.

It is an amenable number.

8742208821 is a deficient number, since it is larger than the sum of its proper divisors (3162075723).

8742208821 is a wasteful number, since it uses less digits than its factorization.

8742208821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62001531.

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 8742208821 is about 93499.7797911845. The cubic root of 8742208821 is about 2060.0308554935.

The spelling of 8742208821 in words is "eight billion, seven hundred forty-two million, two hundred eight thousand, eight hundred twenty-one".