389334813 has 16 divisors (see below), whose sum is σ = 593809920. Its totient is φ = 222275376.

The previous prime is 389334779. The next prime is 389334839. The reversal of 389334813 is 318433983.

It is a happy number.

It is not a de Polignac number, because 389334813 - 2⁶ = 389334749 is a prime.

It is a super-2 number, since 2×389334813² = 303163193227489938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389334853) 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, 17118 + ... + 32736.

It is an arithmetic number, because the mean of its divisors is an integer number (37113120).

Almost surely, 2^389334813 is an apocalyptic number.

It is an amenable number.

389334813 is a deficient number, since it is larger than the sum of its proper divisors (204475107).

389334813 is a wasteful number, since it uses less digits than its factorization.

389334813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16816.

The product of its digits is 186624, while the sum is 42.

The square root of 389334813 is about 19731.5689442071. The cubic root of 389334813 is about 730.1987405342.

The spelling of 389334813 in words is "three hundred eighty-nine million, three hundred thirty-four thousand, eight hundred thirteen".