389893390 has 8 divisors (see below), whose sum is σ = 701808120. Its totient is φ = 155957352.

The previous prime is 389893381. The next prime is 389893393. The reversal of 389893390 is 93398983.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389893393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19494660 + ... + 19494679.

It is an arithmetic number, because the mean of its divisors is an integer number (87726015).

Almost surely, 2^389893390 is an apocalyptic number.

389893390 is a deficient number, since it is larger than the sum of its proper divisors (311914730).

389893390 is a wasteful number, since it uses less digits than its factorization.

389893390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38989346.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 389893390 is about 19745.7182700453. The cubic root of 389893390 is about 730.5477780088.

The spelling of 389893390 in words is "three hundred eighty-nine million, eight hundred ninety-three thousand, three hundred ninety".