389305955 has 4 divisors (see below), whose sum is σ = 467167152. Its totient is φ = 311444760.

The previous prime is 389305951. The next prime is 389305999. The reversal of 389305955 is 559503983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559503983 = 17 ⋅32911999.

It is not a de Polignac number, because 389305955 - 2² = 389305951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389305951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38930591 + ... + 38930600.

It is an arithmetic number, because the mean of its divisors is an integer number (116791788).

Almost surely, 2^389305955 is an apocalyptic number.

389305955 is a deficient number, since it is larger than the sum of its proper divisors (77861197).

389305955 is an equidigital number, since it uses as much as digits as its factorization.

389305955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77861196.

The product of its (nonzero) digits is 729000, while the sum is 47.

The square root of 389305955 is about 19730.8376659482. The cubic root of 389305955 is about 730.1806989966.

The spelling of 389305955 in words is "three hundred eighty-nine million, three hundred five thousand, nine hundred fifty-five".