389713865 has 32 divisors (see below), whose sum is σ = 515496960. Its totient is φ = 281548800.

The previous prime is 389713847. The next prime is 389713879. The reversal of 389713865 is 568317983.

It is a happy number.

It is not a de Polignac number, because 389713865 - 2²⁴ = 372936649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344621 + ... + 345749.

It is an arithmetic number, because the mean of its divisors is an integer number (16109280).

Almost surely, 2^389713865 is an apocalyptic number.

It is an amenable number.

389713865 is a deficient number, since it is larger than the sum of its proper divisors (125783095).

389713865 is a wasteful number, since it uses less digits than its factorization.

389713865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313.

The product of its digits is 1088640, while the sum is 50.

The square root of 389713865 is about 19741.1718243877. The cubic root of 389713865 is about 730.4356347684.

The spelling of 389713865 in words is "three hundred eighty-nine million, seven hundred thirteen thousand, eight hundred sixty-five".