386420561 has 2 divisors, whose sum is σ = 386420562. Its totient is φ = 386420560.

The previous prime is 386420533. The next prime is 386420569. The reversal of 386420561 is 165024683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276590161 + 109830400 = 16631^2 + 10480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386420561 is a prime.

It is not a weakly prime, because it can be changed into another prime (386420569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193210280 + 193210281.

It is an arithmetic number, because the mean of its divisors is an integer number (193210281).

Almost surely, 2^386420561 is an apocalyptic number.

It is an amenable number.

386420561 is a deficient number, since it is larger than the sum of its proper divisors (1).

386420561 is an equidigital number, since it uses as much as digits as its factorization.

386420561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 386420561 is about 19657.5827862939. The cubic root of 386420561 is about 728.3722793290.

The spelling of 386420561 in words is "three hundred eighty-six million, four hundred twenty thousand, five hundred sixty-one".