389313838 has 32 divisors (see below), whose sum is σ = 657296640. Its totient is φ = 171849600.

The previous prime is 389313833. The next prime is 389313839. The reversal of 389313838 is 838313983.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389313833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63613 + ... + 69463.

It is an arithmetic number, because the mean of its divisors is an integer number (20540520).

Almost surely, 2^389313838 is an apocalyptic number.

389313838 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

389313838 is a deficient number, since it is larger than the sum of its proper divisors (267982802).

389313838 is a wasteful number, since it uses less digits than its factorization.

389313838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992.

The product of its digits is 373248, while the sum is 46.

The square root of 389313838 is about 19731.0374283766. The cubic root of 389313838 is about 730.1856274045.

The spelling of 389313838 in words is "three hundred eighty-nine million, three hundred thirteen thousand, eight hundred thirty-eight".