9923792490647 has 8 divisors (see below), whose sum is σ = 11352852744096. Its totient is φ = 8497576140192.

The previous prime is 9923792490637. The next prime is 9923792490659. The reversal of 9923792490647 is 7460942973299.

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 9923792490647 - 2²⁴ = 9923775713431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9923792490637) 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, 710968268 + ... + 710982225.

It is an arithmetic number, because the mean of its divisors is an integer number (1419106593012).

Almost surely, 2^{9923792490647} is an apocalyptic number.

9923792490647 is a deficient number, since it is larger than the sum of its proper divisors (1429060253449).

9923792490647 is a wasteful number, since it uses less digits than its factorization.

9923792490647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421951497.

The product of its (nonzero) digits is 370355328, while the sum is 71.

The spelling of 9923792490647 in words is "nine trillion, nine hundred twenty-three billion, seven hundred ninety-two million, four hundred ninety thousand, six hundred forty-seven".