389918466 has 96 divisors (see below), whose sum is σ = 993353088. Its totient is φ = 108241920.

The previous prime is 389918461. The next prime is 389918489. The reversal of 389918466 is 664819983.

It is not an unprimeable number, because it can be changed into a prime (389918461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 745281 + ... + 745803.

It is an arithmetic number, because the mean of its divisors is an integer number (10347428).

Almost surely, 2^389918466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389918466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496676544).

389918466 is an abundant number, since it is smaller than the sum of its proper divisors (603434622).

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

389918466 is a wasteful number, since it uses less digits than its factorization.

389918466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 693 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 389918466 is about 19746.3532329390. The cubic root of 389918466 is about 730.5634394039.

The spelling of 389918466 in words is "three hundred eighty-nine million, nine hundred eighteen thousand, four hundred sixty-six".