392117091697 has 2 divisors, whose sum is σ = 392117091698. Its totient is φ = 392117091696.

The previous prime is 392117091689. The next prime is 392117091701. The reversal of 392117091697 is 796190711293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233865091216 + 158252000481 = 483596^2 + 397809^2 .

It is a cyclic number.

It is not a de Polignac number, because 392117091697 - 2³ = 392117091689 is a prime.

It is not a weakly prime, because it can be changed into another prime (392117091397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196058545848 + 196058545849.

It is an arithmetic number, because the mean of its divisors is an integer number (196058545849).

Almost surely, 2^392117091697 is an apocalyptic number.

It is an amenable number.

392117091697 is a deficient number, since it is larger than the sum of its proper divisors (1).

392117091697 is an equidigital number, since it uses as much as digits as its factorization.

392117091697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 55.

The spelling of 392117091697 in words is "three hundred ninety-two billion, one hundred seventeen million, ninety-one thousand, six hundred ninety-seven".