385661843 has 8 divisors (see below), whose sum is σ = 441724512. Its totient is φ = 329841216.

The previous prime is 385661839. The next prime is 385661873. The reversal of 385661843 is 348166583.

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 385661843 - 2² = 385661839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385661794 and 385661803.

It is not an unprimeable number, because it can be changed into a prime (385661873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57080 + ... + 63477.

It is an arithmetic number, because the mean of its divisors is an integer number (55215564).

Almost surely, 2^385661843 is an apocalyptic number.

385661843 is a deficient number, since it is larger than the sum of its proper divisors (56062669).

385661843 is a wasteful number, since it uses less digits than its factorization.

385661843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121021.

The product of its digits is 414720, while the sum is 44.

The square root of 385661843 is about 19638.2749496996. The cubic root of 385661843 is about 727.8952591281.

The spelling of 385661843 in words is "three hundred eighty-five million, six hundred sixty-one thousand, eight hundred forty-three".