389258838 has 64 divisors (see below), whose sum is σ = 894801600. Its totient is φ = 125349120.

The previous prime is 389258791. The next prime is 389258861. The reversal of 389258838 is 838852983.

389258838 is a `hidden beast` number, since 389 + 258 + 8 + 3 + 8 = 666.

It is a super-2 number, since 2×389258838² = 303044885922220488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 240520 + ... + 242132.

It is an arithmetic number, because the mean of its divisors is an integer number (13981275).

Almost surely, 2^389258838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389258838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447400800).

389258838 is an abundant number, since it is smaller than the sum of its proper divisors (505542762).

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

389258838 is a wasteful number, since it uses less digits than its factorization.

389258838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1768 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 389258838 is about 19729.6436359099. The cubic root of 389258838 is about 730.1512403223.

The spelling of 389258838 in words is "three hundred eighty-nine million, two hundred fifty-eight thousand, eight hundred thirty-eight".