385304390 has 16 divisors (see below), whose sum is σ = 696021120. Its totient is φ = 153572160.

The previous prime is 385304369. The next prime is 385304393. The reversal of 385304390 is 93403583.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 385304390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385304393) 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, 65750 + ... + 71369.

It is an arithmetic number, because the mean of its divisors is an integer number (43501320).

Almost surely, 2^385304390 is an apocalyptic number.

385304390 is a deficient number, since it is larger than the sum of its proper divisors (310716730).

385304390 is a wasteful number, since it uses less digits than its factorization.

385304390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137407.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 385304390 is about 19629.1719132520. The cubic root of 385304390 is about 727.6703049133.

The spelling of 385304390 in words is "three hundred eighty-five million, three hundred four thousand, three hundred ninety".