8321969490 has 16 divisors (see below), whose sum is σ = 19972726848. Its totient is φ = 2219191856.

The previous prime is 8321969479. The next prime is 8321969497. The reversal of 8321969490 is 949691238.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8321969497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138699462 + ... + 138699521.

It is an arithmetic number, because the mean of its divisors is an integer number (1248295428).

Almost surely, 2^8321969490 is an apocalyptic number.

8321969490 is an abundant number, since it is smaller than the sum of its proper divisors (11650757358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8321969490 is a wasteful number, since it uses less digits than its factorization.

8321969490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277398993.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 8321969490 is about 91224.8293503474. The cubic root of 8321969490 is about 2026.4786834325.

The spelling of 8321969490 in words is "eight billion, three hundred twenty-one million, nine hundred sixty-nine thousand, four hundred ninety".