389303140 has 24 divisors (see below), whose sum is σ = 820161720. Its totient is φ = 155221248.

The previous prime is 389303137. The next prime is 389303149. The reversal of 389303140 is 41303983.

It can be written as a sum of positive squares in 4 ways, for example, as 22733824 + 366569316 = 4768^2 + 19146^2 .

It is not an unprimeable number, because it can be changed into a prime (389303149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24835 + ... + 37354.

It is an arithmetic number, because the mean of its divisors is an integer number (34173405).

Almost surely, 2^389303140 is an apocalyptic number.

It is an amenable number.

389303140 is an abundant number, since it is smaller than the sum of its proper divisors (430858580).

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

389303140 is a wasteful number, since it uses less digits than its factorization.

389303140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62511 (or 62509 counting only the distinct ones).

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

The square root of 389303140 is about 19730.7663307840. The cubic root of 389303140 is about 730.1789390581.

The spelling of 389303140 in words is "three hundred eighty-nine million, three hundred three thousand, one hundred forty".