389961055 has 8 divisors (see below), whose sum is σ = 510494544. Its totient is φ = 283608000.

The previous prime is 389961053. The next prime is 389961107. The reversal of 389961055 is 550169983.

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

It is not a de Polignac number, because 389961055 - 2¹ = 389961053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389960996 and 389961014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389961053) by changing a digit.

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, 3545046 + ... + 3545155.

It is an arithmetic number, because the mean of its divisors is an integer number (63811818).

Almost surely, 2^389961055 is an apocalyptic number.

389961055 is a deficient number, since it is larger than the sum of its proper divisors (120533489).

389961055 is a wasteful number, since it uses less digits than its factorization.

389961055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090217.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 389961055 is about 19747.4316051480. The cubic root of 389961055 is about 730.5900371299.

The spelling of 389961055 in words is "three hundred eighty-nine million, nine hundred sixty-one thousand, fifty-five".