3889140920 has 32 divisors (see below), whose sum is σ = 10000648800. Its totient is φ = 1333419648.

The previous prime is 3889140889. The next prime is 3889140967. The reversal of 3889140920 is 290419883.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6944615 + ... + 6945174.

It is an arithmetic number, because the mean of its divisors is an integer number (312520275).

Almost surely, 2^3889140920 is an apocalyptic number.

It is an amenable number.

3889140920 is an abundant number, since it is smaller than the sum of its proper divisors (6111507880).

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

3889140920 is a wasteful number, since it uses less digits than its factorization.

3889140920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889807 (or 13889803 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 3889140920 is about 62362.9771579260. The cubic root of 3889140920 is about 1572.5986309618.

The spelling of 3889140920 in words is "three billion, eight hundred eighty-nine million, one hundred forty thousand, nine hundred twenty".