392990996791 has 4 divisors (see below), whose sum is σ = 395186477400. Its totient is φ = 390795516184.

The previous prime is 392990996747. The next prime is 392990996831. The reversal of 392990996791 is 197699099293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197699099293 = 103 ⋅1919408731.

It is a cyclic number.

It is not a de Polignac number, because 392990996791 - 2¹⁹ = 392990472503 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 (392990996491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097740036 + ... + 1097740393.

It is an arithmetic number, because the mean of its divisors is an integer number (98796619350).

Almost surely, 2^392990996791 is an apocalyptic number.

392990996791 is a deficient number, since it is larger than the sum of its proper divisors (2195480609).

392990996791 is a wasteful number, since it uses less digits than its factorization.

392990996791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195480608.

The product of its (nonzero) digits is 133923132, while the sum is 73.

The spelling of 392990996791 in words is "three hundred ninety-two billion, nine hundred ninety million, nine hundred ninety-six thousand, seven hundred ninety-one".