389106745 has 4 divisors (see below), whose sum is σ = 466928100. Its totient is φ = 311285392.

The previous prime is 389106743. The next prime is 389106779. The reversal of 389106745 is 547601983.

389106745 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75533481 + 313573264 = 8691^2 + 17708^2 .

It is a cyclic number.

It is not a de Polignac number, because 389106745 - 2¹ = 389106743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389106743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38910670 + ... + 38910679.

It is an arithmetic number, because the mean of its divisors is an integer number (116732025).

Almost surely, 2^389106745 is an apocalyptic number.

It is an amenable number.

389106745 is a deficient number, since it is larger than the sum of its proper divisors (77821355).

389106745 is an equidigital number, since it uses as much as digits as its factorization.

389106745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77821354.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 389106745 is about 19725.7888308681. The cubic root of 389106745 is about 730.0561319194.

The spelling of 389106745 in words is "three hundred eighty-nine million, one hundred six thousand, seven hundred forty-five".