7923192321 has 16 divisors (see below), whose sum is σ = 11836122048. Its totient is φ = 4672152000.

The previous prime is 7923192317. The next prime is 7923192353. The reversal of 7923192321 is 1232913297.

It is not a de Polignac number, because 7923192321 - 2² = 7923192317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7923192321.

It is not an unprimeable number, because it can be changed into a prime (7923192521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3243330 + ... + 3245771.

It is an arithmetic number, because the mean of its divisors is an integer number (739757628).

Almost surely, 2^7923192321 is an apocalyptic number.

It is an amenable number.

7923192321 is a deficient number, since it is larger than the sum of its proper divisors (3912929727).

7923192321 is a wasteful number, since it uses less digits than its factorization.

7923192321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489152.

The product of its digits is 40824, while the sum is 39.

The square root of 7923192321 is about 89012.3155580170. The cubic root of 7923192321 is about 1993.5787660239.

The spelling of 7923192321 in words is "seven billion, nine hundred twenty-three million, one hundred ninety-two thousand, three hundred twenty-one".