385784887 has 8 divisors (see below), whose sum is σ = 391024640. Its totient is φ = 380554200.

The previous prime is 385784881. The next prime is 385784897. The reversal of 385784887 is 788487583.

It is a happy number.

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 385784887 - 2¹⁹ = 385260599 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 (385784881) 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, 152878 + ... + 155380.

It is an arithmetic number, because the mean of its divisors is an integer number (48878080).

Almost surely, 2^385784887 is an apocalyptic number.

385784887 is a deficient number, since it is larger than the sum of its proper divisors (5239753).

385784887 is a wasteful number, since it uses less digits than its factorization.

385784887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533.

The product of its digits is 12042240, while the sum is 58.

The square root of 385784887 is about 19641.4074597520. The cubic root of 385784887 is about 727.9726616701.

The spelling of 385784887 in words is "three hundred eighty-five million, seven hundred eighty-four thousand, eight hundred eighty-seven".