385436779 has 12 divisors (see below), whose sum is σ = 476991696. Its totient is φ = 304960032.

The previous prime is 385436761. The next prime is 385436797. The reversal of 385436779 is 977634583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (385436761) and next prime (385436797).

It is not a de Polignac number, because 385436779 - 2⁹ = 385436267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385436719) 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 in 11 ways as a sum of consecutive naturals, for example, 161724 + ... + 164089.

It is an arithmetic number, because the mean of its divisors is an integer number (39749308).

Almost surely, 2^385436779 is an apocalyptic number.

385436779 is a deficient number, since it is larger than the sum of its proper divisors (91554917).

385436779 is a wasteful number, since it uses less digits than its factorization.

385436779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325846 (or 325833 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 52.

The square root of 385436779 is about 19632.5438749032. The cubic root of 385436779 is about 727.7536368755.

The spelling of 385436779 in words is "three hundred eighty-five million, four hundred thirty-six thousand, seven hundred seventy-nine".