392223197 has 2 divisors, whose sum is σ = 392223198. Its totient is φ = 392223196.

The previous prime is 392223157. The next prime is 392223203. The reversal of 392223197 is 791322293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357247801 + 34975396 = 18901^2 + 5914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-392223197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 392223197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (392223127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196111598 + 196111599.

It is an arithmetic number, because the mean of its divisors is an integer number (196111599).

Almost surely, 2^392223197 is an apocalyptic number.

It is an amenable number.

392223197 is a deficient number, since it is larger than the sum of its proper divisors (1).

392223197 is an equidigital number, since it uses as much as digits as its factorization.

392223197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 392223197 is about 19804.6256465504. The cubic root of 392223197 is about 732.0000180407. Note that the first 4 decimals are identical.

The spelling of 392223197 in words is "three hundred ninety-two million, two hundred twenty-three thousand, one hundred ninety-seven".