389209536 has 70 divisors (see below), whose sum is σ = 1153754360. Its totient is φ = 129734784.

The previous prime is 389209531. The next prime is 389209567. The reversal of 389209536 is 635902983.

It is a junction number, because it is equal to n+sod(n) for n = 389209491 and 389209500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389209531) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32356 + ... + 42723.

Almost surely, 2^389209536 is an apocalyptic number.

389209536 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

389209536 is an abundant number, since it is smaller than the sum of its proper divisors (764544824).

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

389209536 is an equidigital number, since it uses as much as digits as its factorization.

389209536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75103 (or 75084 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 389209536 is about 19728.3941566464. The cubic root of 389209536 is about 730.1204129886.

The spelling of 389209536 in words is "three hundred eighty-nine million, two hundred nine thousand, five hundred thirty-six".