389775155140 has 24 divisors (see below), whose sum is σ = 935460372672. Its totient is φ = 133637196000.

The previous prime is 389775155071. The next prime is 389775155191. The reversal of 389775155140 is 41551577983.

It is a super-2 number, since 2×389775155140² (a number of 24 digits) contains 22 as substring.

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, 1392053986 + ... + 1392054265.

It is an arithmetic number, because the mean of its divisors is an integer number (38977515528).

Almost surely, 2^389775155140 is an apocalyptic number.

It is an amenable number.

389775155140 is an abundant number, since it is smaller than the sum of its proper divisors (545685217532).

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

389775155140 is a wasteful number, since it uses less digits than its factorization.

389775155140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784108267 (or 2784108265 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 389775155140 in words is "three hundred eighty-nine billion, seven hundred seventy-five million, one hundred fifty-five thousand, one hundred forty".