385140438 has 12 divisors (see below), whose sum is σ = 834470988. Its totient is φ = 128380140.

The previous prime is 385140409. The next prime is 385140439. The reversal of 385140438 is 834041583.

385140438 is a `hidden beast` number, since 3 + 85 + 140 + 438 = 666.

385140438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385140439) 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 5 ways as a sum of consecutive naturals, for example, 10698328 + ... + 10698363.

It is an arithmetic number, because the mean of its divisors is an integer number (69539249).

Almost surely, 2^385140438 is an apocalyptic number.

385140438 is an abundant number, since it is smaller than the sum of its proper divisors (449330550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385140438 is a wasteful number, since it uses less digits than its factorization.

385140438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21396699 (or 21396696 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 385140438 is about 19624.9952356682. The cubic root of 385140438 is about 727.5670792294.

The spelling of 385140438 in words is "three hundred eighty-five million, one hundred forty thousand, four hundred thirty-eight".