389738805 has 16 divisors (see below), whose sum is σ = 636850944. Its totient is φ = 203437760.

The previous prime is 389738803. The next prime is 389738813. The reversal of 389738805 is 508837983.

It is a happy number.

It is not a de Polignac number, because 389738805 - 2¹ = 389738803 is a prime.

It is a super-2 number, since 2×389738805² = 303792672245656050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389738803) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 275706 + ... + 277115.

It is an arithmetic number, because the mean of its divisors is an integer number (39803184).

Almost surely, 2^389738805 is an apocalyptic number.

It is an amenable number.

389738805 is a deficient number, since it is larger than the sum of its proper divisors (247112139).

389738805 is a wasteful number, since it uses less digits than its factorization.

389738805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552876.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 389738805 is about 19741.8034890432. The cubic root of 389738805 is about 730.4512160087.

The spelling of 389738805 in words is "three hundred eighty-nine million, seven hundred thirty-eight thousand, eight hundred five".