9845920490399 has 4 divisors (see below), whose sum is σ = 11252480560464. Its totient is φ = 8439360420336.

The previous prime is 9845920490353. The next prime is 9845920490453. The reversal of 9845920490399 is 9930940295489.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9845920490399 - 2²⁰ = 9845919441823 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 (9845920490099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703280035022 + ... + 703280035035.

It is an arithmetic number, because the mean of its divisors is an integer number (2813120140116).

Almost surely, 2^{9845920490399} is an apocalyptic number.

9845920490399 is a deficient number, since it is larger than the sum of its proper divisors (1406560070065).

9845920490399 is a wasteful number, since it uses less digits than its factorization.

9845920490399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406560070064.

The product of its (nonzero) digits is 226748160, while the sum is 71.

The spelling of 9845920490399 in words is "nine trillion, eight hundred forty-five billion, nine hundred twenty million, four hundred ninety thousand, three hundred ninety-nine".