389517540 has 48 divisors (see below), whose sum is σ = 1091966400. Its totient is φ = 103745920.

The previous prime is 389517539. The next prime is 389517551. The reversal of 389517540 is 45715983.

389517540 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 389517492 and 389517501.

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, 53011 + ... + 59909.

It is an arithmetic number, because the mean of its divisors is an integer number (22749300).

Almost surely, 2^389517540 is an apocalyptic number.

389517540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

389517540 is an abundant number, since it is smaller than the sum of its proper divisors (702448860).

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

389517540 is a wasteful number, since it uses less digits than its factorization.

389517540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852 (or 7850 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 389517540 is about 19736.1987221451. The cubic root of 389517540 is about 730.3129577001.

The spelling of 389517540 in words is "three hundred eighty-nine million, five hundred seventeen thousand, five hundred forty".