8921839690 has 16 divisors (see below), whose sum is σ = 16904538720. Its totient is φ = 3380907600.

The previous prime is 8921839657. The next prime is 8921839733. The reversal of 8921839690 is 969381298.

It is a super-3 number, since 3×8921839690³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23478336 + ... + 23478715.

It is an arithmetic number, because the mean of its divisors is an integer number (1056533670).

Almost surely, 2^8921839690 is an apocalyptic number.

8921839690 is a deficient number, since it is larger than the sum of its proper divisors (7982699030).

8921839690 is a wasteful number, since it uses less digits than its factorization.

8921839690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46957077.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 8921839690 is about 94455.4905233147. The cubic root of 8921839690 is about 2074.0448259696.

The spelling of 8921839690 in words is "eight billion, nine hundred twenty-one million, eight hundred thirty-nine thousand, six hundred ninety".