380040217 has 2 divisors, whose sum is σ = 380040218. Its totient is φ = 380040216.

The previous prime is 380040197. The next prime is 380040229. The reversal of 380040217 is 712040083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205377561 + 174662656 = 14331^2 + 13216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380040217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 380040191 and 380040200.

It is not a weakly prime, because it can be changed into another prime (380040517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190020108 + 190020109.

It is an arithmetic number, because the mean of its divisors is an integer number (190020109).

Almost surely, 2^380040217 is an apocalyptic number.

It is an amenable number.

380040217 is a deficient number, since it is larger than the sum of its proper divisors (1).

380040217 is an equidigital number, since it uses as much as digits as its factorization.

380040217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 380040217 is about 19494.6202066108. The cubic root of 380040217 is about 724.3411959009.

The spelling of 380040217 in words is "three hundred eighty million, forty thousand, two hundred seventeen".