389909655792 has 60 divisors (see below), whose sum is σ = 1126405685184. Its totient is φ = 125777306880.

The previous prime is 389909655769. The next prime is 389909655799. The reversal of 389909655792 is 297556909983.

It is a happy number.

389909655792 is a `hidden beast` number, since 389 + 90 + 96 + 5 + 5 + 79 + 2 = 666.

It is a super-3 number, since 3×389909655792³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 389909655792.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389909655799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43668213 + ... + 43677140.

Almost surely, 2^389909655792 is an apocalyptic number.

It is an amenable number.

389909655792 is an abundant number, since it is smaller than the sum of its proper divisors (736496029392).

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

389909655792 is a wasteful number, since it uses less digits than its factorization.

389909655792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87345398 (or 87345389 counting only the distinct ones).

The product of its (nonzero) digits is 330674400, while the sum is 72.

The spelling of 389909655792 in words is "three hundred eighty-nine billion, nine hundred nine million, six hundred fifty-five thousand, seven hundred ninety-two".