389637780 has 48 divisors (see below), whose sum is σ = 1246842240. Its totient is φ = 89059968.

The previous prime is 389637761. The next prime is 389637793. The reversal of 389637780 is 87736983.

389637780 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463435 + ... + 464274.

It is an arithmetic number, because the mean of its divisors is an integer number (25975880).

Almost surely, 2^389637780 is an apocalyptic number.

389637780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

389637780 is an abundant number, since it is smaller than the sum of its proper divisors (857204460).

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

389637780 is a wasteful number, since it uses less digits than its factorization.

389637780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927728 (or 927726 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 389637780 is about 19739.2446664000. The cubic root of 389637780 is about 730.3880966322.

The spelling of 389637780 in words is "three hundred eighty-nine million, six hundred thirty-seven thousand, seven hundred eighty".