389690256808 has 16 divisors (see below), whose sum is σ = 740678400180. Its totient is φ = 192176016768.

The previous prime is 389690256797. The next prime is 389690256841. The reversal of 389690256808 is 808652096983.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 388899409924 + 790846884 = 623618^2 + 28122^2 .

It is a super-3 number, since 3×389690256808³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 389690256808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333638335 + ... + 333639502.

Almost surely, 2^389690256808 is an apocalyptic number.

It is an amenable number.

389690256808 is a deficient number, since it is larger than the sum of its proper divisors (350988143372).

389690256808 is a wasteful number, since it uses less digits than its factorization.

389690256808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667277916 (or 667277912 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 64.

The spelling of 389690256808 in words is "three hundred eighty-nine billion, six hundred ninety million, two hundred fifty-six thousand, eight hundred eight".