389140445 has 8 divisors (see below), whose sum is σ = 467075160. Its totient is φ = 311241280.

The previous prime is 389140393. The next prime is 389140457. The reversal of 389140445 is 544041983.

It can be written as a sum of positive squares in 4 ways, for example, as 28026436 + 361114009 = 5294^2 + 19003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389140445 - 2⁸ = 389140189 is a prime.

It is a super-3 number, since 3×389140445³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389140399 and 389140408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34175 + ... + 44115.

It is an arithmetic number, because the mean of its divisors is an integer number (58384395).

Almost surely, 2^389140445 is an apocalyptic number.

It is an amenable number.

389140445 is a deficient number, since it is larger than the sum of its proper divisors (77934715).

389140445 is an equidigital number, since it uses as much as digits as its factorization.

389140445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17775.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 389140445 is about 19726.6430240931. The cubic root of 389140445 is about 730.0772076968.

The spelling of 389140445 in words is "three hundred eighty-nine million, one hundred forty thousand, four hundred forty-five".