389343100 has 18 divisors (see below), whose sum is σ = 844874744. Its totient is φ = 155737200.

The previous prime is 389343007. The next prime is 389343107. The reversal of 389343100 is 1343983.

It is a super-2 number, since 2×389343100² = 303176099035220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389343107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1946616 + ... + 1946815.

Almost surely, 2^389343100 is an apocalyptic number.

It is an amenable number.

389343100 is an abundant number, since it is smaller than the sum of its proper divisors (455531644).

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

389343100 is a wasteful number, since it uses less digits than its factorization.

389343100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893445 (or 3893438 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 389343100 is about 19731.7789365277. The cubic root of 389343100 is about 730.2039212628.

The spelling of 389343100 in words is "three hundred eighty-nine million, three hundred forty-three thousand, one hundred".