389366545 has 16 divisors (see below), whose sum is σ = 484036560. Its totient is φ = 300467200.

The previous prime is 389366543. The next prime is 389366561. The reversal of 389366545 is 545663983.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 9935104 + 379431441 = 3152^2 + 19479^2 .

It is not a de Polignac number, because 389366545 - 2¹ = 389366543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389366543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7575 + ... + 28915.

It is an arithmetic number, because the mean of its divisors is an integer number (30252285).

Almost surely, 2^389366545 is an apocalyptic number.

It is an amenable number.

389366545 is a deficient number, since it is larger than the sum of its proper divisors (94670015).

389366545 is a wasteful number, since it uses less digits than its factorization.

389366545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21476.

The product of its digits is 2332800, while the sum is 49.

The square root of 389366545 is about 19732.3730199893. The cubic root of 389366545 is about 730.2185778192.

The spelling of 389366545 in words is "three hundred eighty-nine million, three hundred sixty-six thousand, five hundred forty-five".