392214217 has 2 divisors, whose sum is σ = 392214218. Its totient is φ = 392214216.

The previous prime is 392214197. The next prime is 392214269. The reversal of 392214217 is 712412293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310781641 + 81432576 = 17629^2 + 9024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-392214217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (392214287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196107108 + 196107109.

It is an arithmetic number, because the mean of its divisors is an integer number (196107109).

Almost surely, 2^392214217 is an apocalyptic number.

It is an amenable number.

392214217 is a deficient number, since it is larger than the sum of its proper divisors (1).

392214217 is an equidigital number, since it uses as much as digits as its factorization.

392214217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 392214217 is about 19804.3989305407. The cubic root of 392214217 is about 731.9944315869.

The spelling of 392214217 in words is "three hundred ninety-two million, two hundred fourteen thousand, two hundred seventeen".