389380788428 has 12 divisors (see below), whose sum is σ = 681548192472. Its totient is φ = 194652733440.

The previous prime is 389380788427. The next prime is 389380788449. The reversal of 389380788428 is 824887083983.

It is a super-2 number, since 2×389380788428² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389380788427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9391925 + ... + 9433292.

It is an arithmetic number, because the mean of its divisors is an integer number (56795682706).

Almost surely, 2^389380788428 is an apocalyptic number.

It is an amenable number.

389380788428 is a deficient number, since it is larger than the sum of its proper divisors (292167404044).

389380788428 is a wasteful number, since it uses less digits than its factorization.

389380788428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18830392 (or 18830390 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 68.

The spelling of 389380788428 in words is "three hundred eighty-nine billion, three hundred eighty million, seven hundred eighty-eight thousand, four hundred twenty-eight".