385749647 has 8 divisors (see below), whose sum is σ = 419151360. Its totient is φ = 353657880.

The previous prime is 385749643. The next prime is 385749671. The reversal of 385749647 is 746947583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385749647 - 2² = 385749643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385749641) 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 7 ways as a sum of consecutive naturals, for example, 326873 + ... + 328050.

It is an arithmetic number, because the mean of its divisors is an integer number (52393920).

Almost surely, 2^385749647 is an apocalyptic number.

385749647 is a deficient number, since it is larger than the sum of its proper divisors (33401713).

385749647 is a wasteful number, since it uses less digits than its factorization.

385749647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654973.

The product of its digits is 5080320, while the sum is 53.

The square root of 385749647 is about 19640.5103548762. The cubic root of 385749647 is about 727.9504951393.

The spelling of 385749647 in words is "three hundred eighty-five million, seven hundred forty-nine thousand, six hundred forty-seven".