385780039 has 2 divisors, whose sum is σ = 385780040. Its totient is φ = 385780038.

The previous prime is 385780001. The next prime is 385780049. The reversal of 385780039 is 930087583.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385780039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385779977 and 385780004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385780049) 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, 192890019 + 192890020.

It is an arithmetic number, because the mean of its divisors is an integer number (192890020).

Almost surely, 2^385780039 is an apocalyptic number.

385780039 is a deficient number, since it is larger than the sum of its proper divisors (1).

385780039 is an equidigital number, since it uses as much as digits as its factorization.

385780039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 385780039 is about 19641.2840466198. The cubic root of 385780039 is about 727.9696122797.

The spelling of 385780039 in words is "three hundred eighty-five million, seven hundred eighty thousand, thirty-nine".