389105545 has 8 divisors (see below), whose sum is σ = 469626696. Its totient is φ = 309484416.

The previous prime is 389105533. The next prime is 389105551. The reversal of 389105545 is 545501983.

It can be written as a sum of positive squares in 4 ways, for example, as 159037321 + 230068224 = 12611^2 + 15168^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 389105545 - 2⁷ = 389105417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389105498 and 389105507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224052 + ... + 225781.

It is an arithmetic number, because the mean of its divisors is an integer number (58703337).

Almost surely, 2^389105545 is an apocalyptic number.

It is an amenable number.

389105545 is a deficient number, since it is larger than the sum of its proper divisors (80521151).

389105545 is a wasteful number, since it uses less digits than its factorization.

389105545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450011.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 389105545 is about 19725.7584138101. The cubic root of 389105545 is about 730.0553814242.

The spelling of 389105545 in words is "three hundred eighty-nine million, one hundred five thousand, five hundred forty-five".