389512706 has 16 divisors (see below), whose sum is σ = 657946368. Its totient is φ = 171339600.

The previous prime is 389512703. The next prime is 389512709. The reversal of 389512706 is 607215983.

It is an interprime number because it is at equal distance from previous prime (389512703) and next prime (389512709).

It is not an unprimeable number, because it can be changed into a prime (389512703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284885 + ... + 286248.

It is an arithmetic number, because the mean of its divisors is an integer number (41121648).

Almost surely, 2^389512706 is an apocalyptic number.

389512706 is a deficient number, since it is larger than the sum of its proper divisors (268433662).

389512706 is a wasteful number, since it uses less digits than its factorization.

389512706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571177.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 389512706 is about 19736.0762564396. The cubic root of 389512706 is about 730.3099365718.

The spelling of 389512706 in words is "three hundred eighty-nine million, five hundred twelve thousand, seven hundred six".