389406641 has 16 divisors (see below), whose sum is σ = 448366464. Its totient is φ = 335003904.

The previous prime is 389406637. The next prime is 389406649. The reversal of 389406641 is 146604983.

It is not a de Polignac number, because 389406641 - 2² = 389406637 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389406649) 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 15 ways as a sum of consecutive naturals, for example, 14210 + ... + 31316.

It is an arithmetic number, because the mean of its divisors is an integer number (28022904).

Almost surely, 2^389406641 is an apocalyptic number.

It is an amenable number.

389406641 is a deficient number, since it is larger than the sum of its proper divisors (58959823).

389406641 is a wasteful number, since it uses less digits than its factorization.

389406641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17240.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 389406641 is about 19733.3889892233. The cubic root of 389406641 is about 730.2436423242.

The spelling of 389406641 in words is "three hundred eighty-nine million, four hundred six thousand, six hundred forty-one".