389908245120 has 128 divisors (see below), whose sum is σ = 1246522530240. Its totient is φ = 103666827264.

The previous prime is 389908245107. The next prime is 389908245121. The reversal of 389908245120 is 21542809983.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×389908245120² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389908245121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345739 + ... + 948341.

Almost surely, 2^389908245120 is an apocalyptic number.

389908245120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389908245120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623261265120).

389908245120 is an abundant number, since it is smaller than the sum of its proper divisors (856614285120).

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

389908245120 is a wasteful number, since it uses less digits than its factorization.

389908245120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602962 (or 602950 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 389908245120 in words is "three hundred eighty-nine billion, nine hundred eight million, two hundred forty-five thousand, one hundred twenty".