389625640 has 24 divisors (see below), whose sum is σ = 876938670. Its totient is φ = 155800320.

The previous prime is 389625617. The next prime is 389625641. The reversal of 389625640 is 46526983.

It can be written as a sum of positive squares in 3 ways, for example, as 45077796 + 344547844 = 6714^2 + 18562^2 .

It is not an unprimeable number, because it can be changed into a prime (389625641) 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, 123280 + ... + 126400.

Almost surely, 2^389625640 is an apocalyptic number.

It is an amenable number.

389625640 is an abundant number, since it is smaller than the sum of its proper divisors (487313030).

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

389625640 is an frugal number, since it uses more digits than its factorization.

389625640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253 (or 3128 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 389625640 is about 19738.9371547710. The cubic root of 389625640 is about 730.3805109513.

The spelling of 389625640 in words is "three hundred eighty-nine million, six hundred twenty-five thousand, six hundred forty".